49999039928 has 8 divisors (see below), whose sum is σ = 93748199880. Its totient is φ = 24999519960.

The previous prime is 49999039927. The next prime is 49999039933. The reversal of 49999039928 is 82993099994.

49999039928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49999039921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3124939988 + ... + 3124940003.

It is an arithmetic number, because the mean of its divisors is an integer number (11718524985).

Almost surely, 2^49999039928 is an apocalyptic number.

It is an amenable number.

49999039928 is a deficient number, since it is larger than the sum of its proper divisors (43749159952).

49999039928 is a wasteful number, since it uses less digits than its factorization.

49999039928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6249879997 (or 6249879993 counting only the distinct ones).

The product of its (nonzero) digits is 102036672, while the sum is 71.

The spelling of 49999039928 in words is "forty-nine billion, nine hundred ninety-nine million, thirty-nine thousand, nine hundred twenty-eight".