800007139 has 4 divisors (see below), whose sum is σ = 800256024. Its totient is φ = 799758256.

The previous prime is 800007083. The next prime is 800007161. The reversal of 800007139 is 931700008.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800007139 is a prime.

It is a super-2 number, since 2×800007139² = 1280022844901930642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (800007839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119557 + ... + 126070.

It is an arithmetic number, because the mean of its divisors is an integer number (200064006).

Almost surely, 2^800007139 is an apocalyptic number.

800007139 is a deficient number, since it is larger than the sum of its proper divisors (248885).

800007139 is a wasteful number, since it uses less digits than its factorization.

800007139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248884.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 800007139 is about 28284.3974480631. The cubic root of 800007139 is about 928.3205280729.

The spelling of 800007139 in words is "eight hundred million, seven thousand, one hundred thirty-nine".