38999775 has 12 divisors (see below), whose sum is σ = 64479752. Its totient is φ = 20799840.

The previous prime is 38999771. The next prime is 38999777. The reversal of 38999775 is 57799983.

It is not a de Polignac number, because 38999775 - 2² = 38999771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38999771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 259924 + ... + 260073.

Almost surely, 2^38999775 is an apocalyptic number.

38999775 is a deficient number, since it is larger than the sum of its proper divisors (25479977).

38999775 is a wasteful number, since it uses less digits than its factorization.

38999775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520010 (or 520005 counting only the distinct ones).

The product of its digits is 4286520, while the sum is 57.

The square root of 38999775 is about 6244.9799839551. The cubic root of 38999775 is about 339.1204921441.

The spelling of 38999775 in words is "thirty-eight million, nine hundred ninety-nine thousand, seven hundred seventy-five".