80863444 has 6 divisors (see below), whose sum is σ = 141511034. Its totient is φ = 40431720.

The previous prime is 80863427. The next prime is 80863457. The reversal of 80863444 is 44436808.

It can be written as a sum of positive squares in only one way, i.e., 54464400 + 26399044 = 7380^2 + 5138^2 .

It is a super-2 number, since 2×80863444² = 13077793151082272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10107927 + ... + 10107934.

Almost surely, 2^80863444 is an apocalyptic number.

It is an amenable number.

80863444 is a deficient number, since it is larger than the sum of its proper divisors (60647590).

80863444 is a wasteful number, since it uses less digits than its factorization.

80863444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20215865 (or 20215863 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 37.

The square root of 80863444 is about 8992.4103554053. The cubic root of 80863444 is about 432.4315888544.

The spelling of 80863444 in words is "eighty million, eight hundred sixty-three thousand, four hundred forty-four".