800390961 has 12 divisors (see below), whose sum is σ = 1206386688. Its totient is φ = 510394104.

The previous prime is 800390959. The next prime is 800390977. The reversal of 800390961 is 169093008.

It is not a de Polignac number, because 800390961 - 2¹ = 800390959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (800390951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1933105 + ... + 1933518.

It is an arithmetic number, because the mean of its divisors is an integer number (100532224).

Almost surely, 2^800390961 is an apocalyptic number.

It is an amenable number.

800390961 is a deficient number, since it is larger than the sum of its proper divisors (405995727).

800390961 is a wasteful number, since it uses less digits than its factorization.

800390961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3866652 (or 3866649 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 800390961 is about 28291.1816826374. The cubic root of 800390961 is about 928.4689654459.

The spelling of 800390961 in words is "eight hundred million, three hundred ninety thousand, nine hundred sixty-one".