39901904 has 40 divisors (see below), whose sum is σ = 89369280. Its totient is φ = 16904448.

The previous prime is 39901903. The next prime is 39901913. The reversal of 39901904 is 40910993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39901903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7967 + ... + 11969.

It is an arithmetic number, because the mean of its divisors is an integer number (2234232).

Almost surely, 2^39901904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39901904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44684640).

39901904 is an abundant number, since it is smaller than the sum of its proper divisors (49467376).

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

39901904 is a wasteful number, since it uses less digits than its factorization.

39901904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107 (or 4101 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 39901904 is about 6316.7953900692. The cubic root of 39901904 is about 341.7153908171.

The spelling of 39901904 in words is "thirty-nine million, nine hundred one thousand, nine hundred four".