80973919 has 8 divisors (see below), whose sum is σ = 87290000. Its totient is φ = 74670336.

The previous prime is 80973913. The next prime is 80973923. The reversal of 80973919 is 91937908.

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

It is not a de Polignac number, because 80973919 - 2³ = 80973911 is a prime.

It is a super-2 number, since 2×80973919² = 13113551116437122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80973911) 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, 13744 + ... + 18730.

It is an arithmetic number, because the mean of its divisors is an integer number (10911250).

Almost surely, 2^80973919 is an apocalyptic number.

80973919 is a deficient number, since it is larger than the sum of its proper divisors (6316081).

80973919 is a wasteful number, since it uses less digits than its factorization.

80973919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6249.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 80973919 is about 8998.5509389012. The cubic root of 80973919 is about 432.6284274515.

The spelling of 80973919 in words is "eighty million, nine hundred seventy-three thousand, nine hundred nineteen".