49999540 has 48 divisors (see below), whose sum is σ = 109815552. Its totient is φ = 19103616.

The previous prime is 49999529. The next prime is 49999553. The reversal of 49999540 is 4599994.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39802 + ... + 41038.

It is an arithmetic number, because the mean of its divisors is an integer number (2287824).

Almost surely, 2^49999540 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 49999540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54907776).

49999540 is an abundant number, since it is smaller than the sum of its proper divisors (59816012).

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

49999540 is a wasteful number, since it uses less digits than its factorization.

49999540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336 (or 1334 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 49999540 is about 7071.0352848787. The cubic root of 49999540 is about 368.4020200909.

The spelling of 49999540 in words is "forty-nine million, nine hundred ninety-nine thousand, five hundred forty".