49999518 has 20 divisors (see below), whose sum is σ = 112036320. Its totient is φ = 16666452.

The previous prime is 49999489. The next prime is 49999529. The reversal of 49999518 is 81599994.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 154158 + ... + 154481.

It is an arithmetic number, because the mean of its divisors is an integer number (5601816).

Almost surely, 2^49999518 is an apocalyptic number.

49999518 is an abundant number, since it is smaller than the sum of its proper divisors (62036802).

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

49999518 is a wasteful number, since it uses less digits than its factorization.

49999518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308653 (or 308644 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 54.

The square root of 49999518 is about 7071.0337292365. The cubic root of 49999518 is about 368.4019660581.

The spelling of 49999518 in words is "forty-nine million, nine hundred ninety-nine thousand, five hundred eighteen".