Search a number
-
+
38971049 = 132997773
BaseRepresentation
bin1001010010101…
…0011010101001
32201022221020012
42110222122221
534434033144
63511141305
7652151135
oct224523251
981287205
1038971049
111aaa8587
1211074835
1380c63c0
1452663c5
15364be9e
hex252a6a9

38971049 has 4 divisors (see below), whose sum is σ = 41968836. Its totient is φ = 35973264.

The previous prime is 38971043. The next prime is 38971057. The reversal of 38971049 is 94017983.

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: 94017983 = 480119583.

It can be written as a sum of positive squares in 2 ways, for example, as 4243600 + 34727449 = 2060^2 + 5893^2 .

It is a cyclic number.

It is not a de Polignac number, because 38971049 - 28 = 38970793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38970997 and 38971015.

It is not an unprimeable number, because it can be changed into a prime (38971043) 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, 1498874 + ... + 1498899.

It is an arithmetic number, because the mean of its divisors is an integer number (10492209).

Almost surely, 238971049 is an apocalyptic number.

It is an amenable number.

38971049 is a deficient number, since it is larger than the sum of its proper divisors (2997787).

38971049 is a wasteful number, since it uses less digits than its factorization.

38971049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997786.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 38971049 is about 6242.6796329781. The cubic root of 38971049 is about 339.0372098857.

The spelling of 38971049 in words is "thirty-eight million, nine hundred seventy-one thousand, forty-nine".

Divisors: 1 13 2997773 38971049