794355721 has 2 divisors, whose sum is σ = 794355722. Its totient is φ = 794355720.

The previous prime is 794355713. The next prime is 794355767. The reversal of 794355721 is 127553497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 788767225 + 5588496 = 28085^2 + 2364^2 .

It is an emirp because it is prime and its reverse (127553497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 794355721 - 2³ = 794355713 is a prime.

It is a super-2 number, since 2×794355721² = 1262002022970859682, which contains 22 as substring.

It is equal to p_40870879 and since 794355721 and 40870879 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (794355421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 397177860 + 397177861.

It is an arithmetic number, because the mean of its divisors is an integer number (397177861).

Almost surely, 2^794355721 is an apocalyptic number.

It is an amenable number.

794355721 is a deficient number, since it is larger than the sum of its proper divisors (1).

794355721 is an equidigital number, since it uses as much as digits as its factorization.

794355721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 43.

The square root of 794355721 is about 28184.3169333585. The cubic root of 794355721 is about 926.1294102205.

The spelling of 794355721 in words is "seven hundred ninety-four million, three hundred fifty-five thousand, seven hundred twenty-one".