80919345 has 16 divisors (see below), whose sum is σ = 139430592. Its totient is φ = 39837120.

The previous prime is 80919329. The next prime is 80919353. The reversal of 80919345 is 54391908.

It is not a de Polignac number, because 80919345 - 2⁴ = 80919329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207291 + ... + 207680.

It is an arithmetic number, because the mean of its divisors is an integer number (8714412).

Almost surely, 2^80919345 is an apocalyptic number.

It is an amenable number.

80919345 is a deficient number, since it is larger than the sum of its proper divisors (58511247).

80919345 is a wasteful number, since it uses less digits than its factorization.

80919345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414992.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 80919345 is about 8995.5180506739. The cubic root of 80919345 is about 432.5312127340.

The spelling of 80919345 in words is "eighty million, nine hundred nineteen thousand, three hundred forty-five".