49995640 has 32 divisors (see below), whose sum is σ = 119108880. Its totient is φ = 18821632.

The previous prime is 49995637. The next prime is 49995679. The reversal of 49995640 is 4659994.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36082 + ... + 37441.

Almost surely, 2^49995640 is an apocalyptic number.

49995640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49995640 is an abundant number, since it is smaller than the sum of its proper divisors (69113240).

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

49995640 is a wasteful number, since it uses less digits than its factorization.

49995640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73551 (or 73547 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 49995640 is about 7070.7595065877. The cubic root of 49995640 is about 368.3924413012.

The spelling of 49995640 in words is "forty-nine million, nine hundred ninety-five thousand, six hundred forty".