80743990 has 16 divisors (see below), whose sum is σ = 149267952. Its totient is φ = 31424544.

The previous prime is 80743987. The next prime is 80743991. The reversal of 80743990 is 9934708.

It is a super-2 number, since 2×80743990² = 13039183842240200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80743991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108744 + ... + 109483.

It is an arithmetic number, because the mean of its divisors is an integer number (9329247).

Almost surely, 2^80743990 is an apocalyptic number.

80743990 is a deficient number, since it is larger than the sum of its proper divisors (68523962).

80743990 is a wasteful number, since it uses less digits than its factorization.

80743990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218271.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 80743990 is about 8985.7659662379. The cubic root of 80743990 is about 432.2185501101.

The spelling of 80743990 in words is "eighty million, seven hundred forty-three thousand, nine hundred ninety".