404726897 has 8 divisors (see below), whose sum is σ = 410055912. Its totient is φ = 399424000.

The previous prime is 404726893. The next prime is 404726947. The reversal of 404726897 is 798627404.

It can be written as a sum of positive squares in 4 ways, for example, as 274576 + 404452321 = 524^2 + 20111^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 404726897 - 2² = 404726893 is a prime.

It is a super-2 number, since 2×404726897² = 327607722310497218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404726891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25697 + ... + 38337.

It is an arithmetic number, because the mean of its divisors is an integer number (51256989).

Almost surely, 2^404726897 is an apocalyptic number.

It is an amenable number.

404726897 is a deficient number, since it is larger than the sum of its proper divisors (5329015).

404726897 is a wasteful number, since it uses less digits than its factorization.

404726897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13059.

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 404726897 is about 20117.8253546451. The cubic root of 404726897 is about 739.6972812210.

The spelling of 404726897 in words is "four hundred four million, seven hundred twenty-six thousand, eight hundred ninety-seven".