80919213 has 8 divisors (see below), whose sum is σ = 108580128. Its totient is φ = 53602224.

The previous prime is 80919203. The next prime is 80919217. The reversal of 80919213 is 31291908.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-80919213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80919217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85431 + ... + 86372.

It is an arithmetic number, because the mean of its divisors is an integer number (13572516).

Almost surely, 2^80919213 is an apocalyptic number.

It is an amenable number.

80919213 is a deficient number, since it is larger than the sum of its proper divisors (27660915).

80919213 is a wasteful number, since it uses less digits than its factorization.

80919213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171963.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 80919213 is about 8995.5107136838. The cubic root of 80919213 is about 432.5309775444.

The spelling of 80919213 in words is "eighty million, nine hundred nineteen thousand, two hundred thirteen".