38990965 has 16 divisors (see below), whose sum is σ = 51464448. Its totient is φ = 28178496.

The previous prime is 38990953. The next prime is 38990977. The reversal of 38990965 is 56909983.

It is an interprime number because it is at equal distance from previous prime (38990953) and next prime (38990977).

It is a cyclic number.

It is not a de Polignac number, because 38990965 - 2⁷ = 38990837 is a prime.

It is a super-3 number, since 3×38990965³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3327 + ... + 9436.

It is an arithmetic number, because the mean of its divisors is an integer number (3216528).

Almost surely, 2^38990965 is an apocalyptic number.

It is an amenable number.

38990965 is a deficient number, since it is larger than the sum of its proper divisors (12473483).

38990965 is a wasteful number, since it uses less digits than its factorization.

38990965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12828.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 38990965 is about 6244.2745775630. The cubic root of 38990965 is about 339.0949545905.

The spelling of 38990965 in words is "thirty-eight million, nine hundred ninety thousand, nine hundred sixty-five".