99080421 has 24 divisors (see below), whose sum is σ = 152119584. Its totient is φ = 56881440.

The previous prime is 99080419. The next prime is 99080441. The reversal of 99080421 is 12408099.

It is not a de Polignac number, because 99080421 - 2¹ = 99080419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99080441) 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 23 ways as a sum of consecutive naturals, for example, 7755 + ... + 16071.

It is an arithmetic number, because the mean of its divisors is an integer number (6338316).

Almost surely, 2^99080421 is an apocalyptic number.

It is an amenable number.

99080421 is a deficient number, since it is larger than the sum of its proper divisors (53039163).

99080421 is a wasteful number, since it uses less digits than its factorization.

99080421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8369 (or 8350 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 99080421 is about 9953.9148579843. The cubic root of 99080421 is about 462.7317305753.

The spelling of 99080421 in words is "ninety-nine million, eighty thousand, four hundred twenty-one".