80998440 has 32 divisors (see below), whose sum is σ = 242995680. Its totient is φ = 21599552.

The previous prime is 80998417. The next prime is 80998451. The reversal of 80998440 is 4489908.

It is a junction number, because it is equal to n+sod(n) for n = 80998392 and 80998401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337374 + ... + 337613.

It is an arithmetic number, because the mean of its divisors is an integer number (7593615).

Almost surely, 2^80998440 is an apocalyptic number.

It is an amenable number.

80998440 is an abundant number, since it is smaller than the sum of its proper divisors (161997240).

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

80998440 is a wasteful number, since it uses less digits than its factorization.

80998440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675001 (or 674997 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 80998440 is about 8999.9133329160. The cubic root of 80998440 is about 432.6720934086.

The spelling of 80998440 in words is "eighty million, nine hundred ninety-eight thousand, four hundred forty".