49997904 has 40 divisors (see below), whose sum is σ = 140904672. Its totient is φ = 15150720.

The previous prime is 49997903. The next prime is 49997933. The reversal of 49997904 is 40979994.

49997904 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 (49997903) 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 7 ways as a sum of consecutive naturals, for example, 46819 + ... + 47874.

Almost surely, 2^49997904 is an apocalyptic number.

49997904 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

49997904 is an abundant number, since it is smaller than the sum of its proper divisors (90906768).

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

49997904 is a wasteful number, since it uses less digits than its factorization.

49997904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94715 (or 94709 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 49997904 is about 7070.9196007309. The cubic root of 49997904 is about 368.3980019721.

The spelling of 49997904 in words is "forty-nine million, nine hundred ninety-seven thousand, nine hundred four".