38999900 has 18 divisors (see below), whose sum is σ = 84630000. Its totient is φ = 15599920.

The previous prime is 38999861. The next prime is 38999903. The reversal of 38999900 is 999983.

It is a happy number.

38999900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38999903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 194900 + ... + 195099.

Almost surely, 2^38999900 is an apocalyptic number.

It is an amenable number.

38999900 is an abundant number, since it is smaller than the sum of its proper divisors (45630100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38999900 is a wasteful number, since it uses less digits than its factorization.

38999900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390013 (or 390006 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 38999900 is about 6244.9899919856. The cubic root of 38999900 is about 339.1208544540.

The spelling of 38999900 in words is "thirty-eight million, nine hundred ninety-nine thousand, nine hundred".