80857973 has 4 divisors (see below), whose sum is σ = 92409120. Its totient is φ = 69306828.

The previous prime is 80857957. The next prime is 80857981. The reversal of 80857973 is 37975808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80857973 - 2⁴ = 80857957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80857993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5775563 + ... + 5775576.

It is an arithmetic number, because the mean of its divisors is an integer number (23102280).

Almost surely, 2^80857973 is an apocalyptic number.

It is an amenable number.

80857973 is a deficient number, since it is larger than the sum of its proper divisors (11551147).

80857973 is a wasteful number, since it uses less digits than its factorization.

80857973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11551146.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 80857973 is about 8992.1061492845. The cubic root of 80857973 is about 432.4218362539.

The spelling of 80857973 in words is "eighty million, eight hundred fifty-seven thousand, nine hundred seventy-three".