38995521 has 8 divisors (see below), whose sum is σ = 53399424. Its totient is φ = 25294320.

The previous prime is 38995507. The next prime is 38995549. The reversal of 38995521 is 12559983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38995521 - 2⁹ = 38995009 is a prime.

It is a super-2 number, since 2×38995521² = 3041301316122882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38995321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175545 + ... + 175766.

It is an arithmetic number, because the mean of its divisors is an integer number (6674928).

Almost surely, 2^38995521 is an apocalyptic number.

It is an amenable number.

38995521 is a deficient number, since it is larger than the sum of its proper divisors (14403903).

38995521 is a wasteful number, since it uses less digits than its factorization.

38995521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351351.

The product of its digits is 97200, while the sum is 42.

The square root of 38995521 is about 6244.6393811012. The cubic root of 38995521 is about 339.1081615514.

The spelling of 38995521 in words is "thirty-eight million, nine hundred ninety-five thousand, five hundred twenty-one".