Search a number
-
+
790670849 = 1097253861
BaseRepresentation
bin101111001000001…
…010111000000001
32001002210020111112
4233020022320001
53104402431344
6210242453105
725410406553
oct5710127001
92032706445
10790670849
11376349791
121a0964195
13c7a67797
147701b4d3
1549632c9e
hex2f20ae01

790670849 has 4 divisors (see below), whose sum is σ = 797924820. Its totient is φ = 783416880.

The previous prime is 790670809. The next prime is 790670851. The reversal of 790670849 is 948076097.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 948076097 = 3972388101.

It can be written as a sum of positive squares in 2 ways, for example, as 627853249 + 162817600 = 25057^2 + 12760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-790670849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 790670797 and 790670806.

It is not an unprimeable number, because it can be changed into a prime (790670809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3626822 + ... + 3627039.

It is an arithmetic number, because the mean of its divisors is an integer number (199481205).

Almost surely, 2790670849 is an apocalyptic number.

It is an amenable number.

790670849 is a deficient number, since it is larger than the sum of its proper divisors (7253971).

790670849 is a wasteful number, since it uses less digits than its factorization.

790670849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7253970.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 790670849 is about 28118.8699808509. The cubic root of 790670849 is about 924.6951414164.

The spelling of 790670849 in words is "seven hundred ninety million, six hundred seventy thousand, eight hundred forty-nine".

Divisors: 1 109 7253861 790670849