Search a number
-
+
999970001 = 5991669399
BaseRepresentation
bin111011100110100…
…101010011010001
32120200121201221222
4323212211103101
54021443020001
6243120454425
733531414302
oct7346452321
92520551858
10999970001
11473503298
1223aa7a415
1312c229634
1496b407a9
155cbc761b
hex3b9a54d1

999970001 has 4 divisors (see below), whose sum is σ = 1001640000. Its totient is φ = 998300004.

The previous prime is 999969991. The next prime is 999970003. The reversal of 999970001 is 100079999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100079999 = 971103069.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-999970001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999970003) 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, 834101 + ... + 835298.

It is an arithmetic number, because the mean of its divisors is an integer number (250410000).

Almost surely, 2999970001 is an apocalyptic number.

It is an amenable number.

999970001 is a deficient number, since it is larger than the sum of its proper divisors (1669999).

999970001 is a wasteful number, since it uses less digits than its factorization.

999970001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669998.

The product of its (nonzero) digits is 45927, while the sum is 44.

The square root of 999970001 is about 31622.3022722888. The cubic root of 999970001 is about 999.9900002333.

The spelling of 999970001 in words is "nine hundred ninety-nine million, nine hundred seventy thousand, one".

Divisors: 1 599 1669399 999970001