404027645 has 8 divisors (see below), whose sum is σ = 554095104. Its totient is φ = 277047504.

The previous prime is 404027641. The next prime is 404027669. The reversal of 404027645 is 546720404.

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 404027645 - 2² = 404027641 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404027641) 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, 5771789 + ... + 5771858.

It is an arithmetic number, because the mean of its divisors is an integer number (69261888).

Almost surely, 2^404027645 is an apocalyptic number.

It is an amenable number.

404027645 is a deficient number, since it is larger than the sum of its proper divisors (150067459).

404027645 is a wasteful number, since it uses less digits than its factorization.

404027645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11543659.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 404027645 is about 20100.4389255558. The cubic root of 404027645 is about 739.2710407354.

The spelling of 404027645 in words is "four hundred four million, twenty-seven thousand, six hundred forty-five".