38985907 has 4 divisors (see below), whose sum is σ = 39892600. Its totient is φ = 38079216.

The previous prime is 38985883. The next prime is 38985911. The reversal of 38985907 is 70958983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70958983 = 191 ⋅371513.

It is a cyclic number.

It is not a de Polignac number, because 38985907 - 2¹⁵ = 38953139 is a prime.

It is a super-2 number, since 2×38985907² = 3039801889225298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38985917) 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, 453282 + ... + 453367.

It is an arithmetic number, because the mean of its divisors is an integer number (9973150).

Almost surely, 2^38985907 is an apocalyptic number.

38985907 is a deficient number, since it is larger than the sum of its proper divisors (906693).

38985907 is an equidigital number, since it uses as much as digits as its factorization.

38985907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906692.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 38985907 is about 6243.8695534100. The cubic root of 38985907 is about 339.0802912238.

The spelling of 38985907 in words is "thirty-eight million, nine hundred eighty-five thousand, nine hundred seven".