99121480 has 32 divisors (see below), whose sum is σ = 234763200. Its totient is φ = 37561536.

The previous prime is 99121471. The next prime is 99121489. The reversal of 99121480 is 8412199.

It is an interprime number because it is at equal distance from previous prime (99121471) and next prime (99121489).

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (99121489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64452 + ... + 65971.

It is an arithmetic number, because the mean of its divisors is an integer number (7336350).

Almost surely, 2^99121480 is an apocalyptic number.

It is an amenable number.

99121480 is an abundant number, since it is smaller than the sum of its proper divisors (135641720).

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

99121480 is a wasteful number, since it uses less digits than its factorization.

99121480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130453 (or 130449 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 99121480 is about 9955.9770992103. The cubic root of 99121480 is about 462.7956405389.

The spelling of 99121480 in words is "ninety-nine million, one hundred twenty-one thousand, four hundred eighty".