800523139 has 8 divisors (see below), whose sum is σ = 863035040. Its totient is φ = 738144576.

The previous prime is 800523109. The next prime is 800523167. The reversal of 800523139 is 931325008.

It is a happy number.

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

It is not a de Polignac number, because 800523139 - 2¹³ = 800514947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 800523139.

It is not an unprimeable number, because it can be changed into a prime (800523109) 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, 20679 + ... + 45040.

It is an arithmetic number, because the mean of its divisors is an integer number (107879380).

Almost surely, 2^800523139 is an apocalyptic number.

800523139 is a deficient number, since it is larger than the sum of its proper divisors (62511901).

800523139 is a wasteful number, since it uses less digits than its factorization.

800523139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66669.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 800523139 is about 28293.5176144643. The cubic root of 800523139 is about 928.5200723099.

The spelling of 800523139 in words is "eight hundred million, five hundred twenty-three thousand, one hundred thirty-nine".