80993115 has 96 divisors (see below), whose sum is σ = 169827840. Its totient is φ = 36267264.

The previous prime is 80993113. The next prime is 80993131. The reversal of 80993115 is 51139908.

It is a happy number.

It is not a de Polignac number, because 80993115 - 2¹ = 80993113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80993115.

It is not an unprimeable number, because it can be changed into a prime (80993113) 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 95 ways as a sum of consecutive naturals, for example, 756892 + ... + 756998.

It is an arithmetic number, because the mean of its divisors is an integer number (1769040).

Almost surely, 2^80993115 is an apocalyptic number.

80993115 is an abundant number, since it is smaller than the sum of its proper divisors (88834725).

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

80993115 is a wasteful number, since it uses less digits than its factorization.

80993115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 80993115 is about 8999.6174918715. The cubic root of 80993115 is about 432.6626116235.

The spelling of 80993115 in words is "eighty million, nine hundred ninety-three thousand, one hundred fifteen".