794447721 has 24 divisors (see below), whose sum is σ = 1212382080. Its totient is φ = 500480736.

The previous prime is 794447671. The next prime is 794447737. The reversal of 794447721 is 127744497.

It is not a de Polignac number, because 794447721 - 2⁷ = 794447593 is a prime.

It is a super-2 number, since 2×794447721² = 1262294362804187682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (794447021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20115 + ... + 44648.

It is an arithmetic number, because the mean of its divisors is an integer number (50515920).

Almost surely, 2^794447721 is an apocalyptic number.

It is an amenable number.

794447721 is a deficient number, since it is larger than the sum of its proper divisors (417934359).

794447721 is a wasteful number, since it uses less digits than its factorization.

794447721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64845 (or 64842 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 794447721 is about 28185.9489994572. The cubic root of 794447721 is about 926.1651627238.

The spelling of 794447721 in words is "seven hundred ninety-four million, four hundred forty-seven thousand, seven hundred twenty-one".