80003857 has 2 divisors, whose sum is σ = 80003858. Its totient is φ = 80003856.

The previous prime is 80003831. The next prime is 80003881. The reversal of 80003857 is 75830008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45711121 + 34292736 = 6761^2 + 5856^2 .

It is a cyclic number.

It is not a de Polignac number, because 80003857 - 2¹¹ = 80001809 is a prime.

It is not a weakly prime, because it can be changed into another prime (80003827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40001928 + 40001929.

It is an arithmetic number, because the mean of its divisors is an integer number (40001929).

Almost surely, 2^80003857 is an apocalyptic number.

It is an amenable number.

80003857 is a deficient number, since it is larger than the sum of its proper divisors (1).

80003857 is an equidigital number, since it uses as much as digits as its factorization.

80003857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 80003857 is about 8944.4875202551. The cubic root of 80003857 is about 430.8938626073.

Subtracting from 80003857 its reverse (75830008), we obtain a square (4173849 = 2043²).

The spelling of 80003857 in words is "eighty million, three thousand, eight hundred fifty-seven".