49999999940 has 48 divisors (see below), whose sum is σ = 115492172544. Its totient is φ = 18181808480.

The previous prime is 49999999867. The next prime is 49999999957. The reversal of 49999999940 is 4999999994.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 912524 + ... + 965763.

It is an arithmetic number, because the mean of its divisors is an integer number (2406086928).

Almost surely, 2^49999999940 is an apocalyptic number.

It is an amenable number.

49999999940 is an abundant number, since it is smaller than the sum of its proper divisors (65492172604).

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

49999999940 is a wasteful number, since it uses less digits than its factorization.

49999999940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878329 (or 1878305 counting only the distinct ones).

The product of its (nonzero) digits is 688747536, while the sum is 80.

The spelling of 49999999940 in words is "forty-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred forty".