800923978 has 8 divisors (see below), whose sum is σ = 1233855972. Its totient is φ = 389638656.

The previous prime is 800923957. The next prime is 800924023. The reversal of 800923978 is 879329008.

It can be written as a sum of positive squares in 2 ways, for example, as 547700409 + 253223569 = 23403^2 + 15913^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5411575 + ... + 5411722.

Almost surely, 2^800923978 is an apocalyptic number.

800923978 is a deficient number, since it is larger than the sum of its proper divisors (432931994).

800923978 is a wasteful number, since it uses less digits than its factorization.

800923978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10823336.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 800923978 is about 28300.6003116542. The cubic root of 800923978 is about 928.6750230480.

The spelling of 800923978 in words is "eight hundred million, nine hundred twenty-three thousand, nine hundred seventy-eight".