801279722 has 4 divisors (see below), whose sum is σ = 1201919586. Its totient is φ = 400639860.

The previous prime is 801279707. The next prime is 801279749. The reversal of 801279722 is 227972108.

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

It can be written as a sum of positive squares in only one way, i.e., 771783961 + 29495761 = 27781^2 + 5431^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200319929 + ... + 200319932.

Almost surely, 2^801279722 is an apocalyptic number.

801279722 is a deficient number, since it is larger than the sum of its proper divisors (400639864).

801279722 is a wasteful number, since it uses less digits than its factorization.

801279722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400639863.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 801279722 is about 28306.8847102609. The cubic root of 801279722 is about 928.8124982955.

The spelling of 801279722 in words is "eight hundred one million, two hundred seventy-nine thousand, seven hundred twenty-two".