80949856 has 24 divisors (see below), whose sum is σ = 171630144. Its totient is φ = 37361280.

The previous prime is 80949809. The next prime is 80949859. The reversal of 80949856 is 65894908.

80949856 = 1093² + 1094² + ... + 1156².

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80949859) 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 3 ways as a sum of consecutive naturals, for example, 96880 + ... + 97711.

It is an arithmetic number, because the mean of its divisors is an integer number (7151256).

Almost surely, 2^80949856 is an apocalyptic number.

It is an amenable number.

80949856 is an abundant number, since it is smaller than the sum of its proper divisors (90680288).

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

80949856 is a wasteful number, since it uses less digits than its factorization.

80949856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194614 (or 194606 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 80949856 is about 8997.2137909466. The cubic root of 80949856 is about 432.5855685106.

The spelling of 80949856 in words is "eighty million, nine hundred forty-nine thousand, eight hundred fifty-six".