801244978 has 8 divisors (see below), whose sum is σ = 1202803740. Its totient is φ = 400310400.

The previous prime is 801244963. The next prime is 801244979. The reversal of 801244978 is 879442108.

It can be written as a sum of positive squares in 2 ways, for example, as 772117369 + 29127609 = 27787^2 + 5397^2 .

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

It is not an unprimeable number, because it can be changed into a prime (801244979) 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, 152823 + ... + 157978.

Almost surely, 2^801244978 is an apocalyptic number.

801244978 is a deficient number, since it is larger than the sum of its proper divisors (401558762).

801244978 is a wasteful number, since it uses less digits than its factorization.

801244978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312092.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 801244978 is about 28306.2710013170. The cubic root of 801244978 is about 928.7990734673.

The spelling of 801244978 in words is "eight hundred one million, two hundred forty-four thousand, nine hundred seventy-eight".