49991154 has 16 divisors (see below), whose sum is σ = 100269792. Its totient is φ = 16615808.

The previous prime is 49991143. The next prime is 49991159. The reversal of 49991154 is 45119994.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (49991159) 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, 9684 + ... + 13919.

It is an arithmetic number, because the mean of its divisors is an integer number (6266862).

Almost surely, 2^49991154 is an apocalyptic number.

49991154 is an abundant number, since it is smaller than the sum of its proper divisors (50278638).

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

49991154 is a wasteful number, since it uses less digits than its factorization.

49991154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23961.

The product of its digits is 58320, while the sum is 42.

The square root of 49991154 is about 7070.4422775382. The cubic root of 49991154 is about 368.3814226209.

The spelling of 49991154 in words is "forty-nine million, nine hundred ninety-one thousand, one hundred fifty-four".