49138992 has 180 divisors, whose sum is σ = 166648560. Its totient is φ = 13224960.

The previous prime is 49138987. The next prime is 49139047. The reversal of 49138992 is 29983194.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1198492 + ... + 1198532.

Almost surely, 2^49138992 is an apocalyptic number.

49138992 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49138992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83324280).

49138992 is an abundant number, since it is smaller than the sum of its proper divisors (117509568).

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

49138992 is a wasteful number, since it uses less digits than its factorization.

49138992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 82 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 49138992 is about 7009.9209695973. The cubic root of 49138992 is about 366.2762404369.

The spelling of 49138992 in words is "forty-nine million, one hundred thirty-eight thousand, nine hundred ninety-two".