80993400 has 48 divisors (see below), whose sum is σ = 251081400. Its totient is φ = 21598080.

The previous prime is 80993399. The next prime is 80993411. The reversal of 80993400 is 439908.

It is a super-3 number, since 3×80993400³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66895 + ... + 68094.

Almost surely, 2^80993400 is an apocalyptic number.

It is an amenable number.

80993400 is an abundant number, since it is smaller than the sum of its proper divisors (170088000).

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

80993400 is a wasteful number, since it uses less digits than its factorization.

80993400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135008 (or 134999 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 80993400 is about 8999.6333258639. The cubic root of 80993400 is about 432.6631191099.

The spelling of 80993400 in words is "eighty million, nine hundred ninety-three thousand, four hundred".