80886445 has 4 divisors (see below), whose sum is σ = 97063740. Its totient is φ = 64709152.

The previous prime is 80886437. The next prime is 80886451. The reversal of 80886445 is 54468808.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24621444 + 56265001 = 4962^2 + 7501^2 .

It is a cyclic number.

It is not a de Polignac number, because 80886445 - 2³ = 80886437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8088640 + ... + 8088649.

It is an arithmetic number, because the mean of its divisors is an integer number (24265935).

Almost surely, 2^80886445 is an apocalyptic number.

It is an amenable number.

80886445 is a deficient number, since it is larger than the sum of its proper divisors (16177295).

80886445 is a wasteful number, since it uses less digits than its factorization.

80886445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16177294.

The product of its (nonzero) digits is 245760, while the sum is 43.

The square root of 80886445 is about 8993.6891763058. The cubic root of 80886445 is about 432.4725856080.

The spelling of 80886445 in words is "eighty million, eight hundred eighty-six thousand, four hundred forty-five".