49009992 has 16 divisors (see below), whose sum is σ = 122525040. Its totient is φ = 16336656.

The previous prime is 49009979. The next prime is 49009993. The reversal of 49009992 is 29990094.

It is not an unprimeable number, because it can be changed into a prime (49009993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021018 + ... + 1021065.

It is an arithmetic number, because the mean of its divisors is an integer number (7657815).

Almost surely, 2^49009992 is an apocalyptic number.

It is an amenable number.

49009992 is an abundant number, since it is smaller than the sum of its proper divisors (73515048).

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

49009992 is a wasteful number, since it uses less digits than its factorization.

49009992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042092 (or 2042088 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 49009992 is about 7000.7136779046. The cubic root of 49009992 is about 365.9554426333.

Subtracting from 49009992 its sum of digits (42), we obtain a triangular number (49009950 = T₉₉₀₀).

The spelling of 49009992 in words is "forty-nine million, nine thousand, nine hundred ninety-two".