49991148 has 24 divisors (see below), whose sum is σ = 129606960. Its totient is φ = 16663680.

The previous prime is 49991143. The next prime is 49991159. The reversal of 49991148 is 84119994.

It is a super-2 number, since 2×49991148² = 4998229756715808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49991141) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 231333 + ... + 231548.

It is an arithmetic number, because the mean of its divisors is an integer number (5400290).

Almost surely, 2^49991148 is an apocalyptic number.

It is an amenable number.

49991148 is an abundant number, since it is smaller than the sum of its proper divisors (79615812).

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

49991148 is a wasteful number, since it uses less digits than its factorization.

49991148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462894 (or 462886 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 49991148 is about 7070.4418532366. The cubic root of 49991148 is about 368.3814078830.

The spelling of 49991148 in words is "forty-nine million, nine hundred ninety-one thousand, one hundred forty-eight".