800844137 has 4 divisors (see below), whose sum is σ = 802017360. Its totient is φ = 799670916.

The previous prime is 800844127. The next prime is 800844181. The reversal of 800844137 is 731448008.

It is a happy number.

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 800844137 - 2⁶ = 800844073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 800844097 and 800844106.

It is not an unprimeable number, because it can be changed into a prime (800844127) 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, 585587 + ... + 586952.

It is an arithmetic number, because the mean of its divisors is an integer number (200504340).

Almost surely, 2^800844137 is an apocalyptic number.

It is an amenable number.

800844137 is a deficient number, since it is larger than the sum of its proper divisors (1173223).

800844137 is a wasteful number, since it uses less digits than its factorization.

800844137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173222.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 800844137 is about 28299.1896880458. The cubic root of 800844137 is about 928.6441633541.

The spelling of 800844137 in words is "eight hundred million, eight hundred forty-four thousand, one hundred thirty-seven".