99991124 has 12 divisors (see below), whose sum is σ = 175166964. Its totient is φ = 49943424.

The previous prime is 99991109. The next prime is 99991207. The reversal of 99991124 is 42119999.

It can be written as a sum of positive squares in 2 ways, for example, as 64802500 + 35188624 = 8050^2 + 5932^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8549 + ... + 16524.

It is an arithmetic number, because the mean of its divisors is an integer number (14597247).

Almost surely, 2^99991124 is an apocalyptic number.

It is an amenable number.

99991124 is a deficient number, since it is larger than the sum of its proper divisors (75175840).

99991124 is a wasteful number, since it uses less digits than its factorization.

99991124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26074 (or 26072 counting only the distinct ones).

The product of its digits is 52488, while the sum is 44.

The square root of 99991124 is about 9999.5561901516. The cubic root of 99991124 is about 464.1451500408.

The spelling of 99991124 in words is "ninety-nine million, nine hundred ninety-one thousand, one hundred twenty-four".