404804645 has 8 divisors (see below), whose sum is σ = 555160704. Its totient is φ = 277580304.

The previous prime is 404804641. The next prime is 404804689. The reversal of 404804645 is 546408404.

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 404804645 - 2² = 404804641 is a prime.

It is a super-2 number, since 2×404804645² = 327733601227152050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 11565847 = 404804645 / (4 + 0 + 4 + 8 + 0 + 4 + 6 + 4 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404804641) 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, 5782889 + ... + 5782958.

It is an arithmetic number, because the mean of its divisors is an integer number (69395088).

Almost surely, 2^404804645 is an apocalyptic number.

It is an amenable number.

404804645 is a deficient number, since it is larger than the sum of its proper divisors (150356059).

404804645 is a wasteful number, since it uses less digits than its factorization.

404804645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11565859.

The product of its (nonzero) digits is 61440, while the sum is 35.

The square root of 404804645 is about 20119.7575780624. The cubic root of 404804645 is about 739.7446434485.

The spelling of 404804645 in words is "four hundred four million, eight hundred four thousand, six hundred forty-five".