404040395657 has 8 divisors (see below), whose sum is σ = 408053702592. Its totient is φ = 400027342000.

The previous prime is 404040395651. The next prime is 404040395659. The reversal of 404040395657 is 756593040404.

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 404040395657 - 2⁶ = 404040395593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404040395651) 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, 6195932 + ... + 6260802.

It is an arithmetic number, because the mean of its divisors is an integer number (51006712824).

Almost surely, 2^404040395657 is an apocalyptic number.

It is an amenable number.

404040395657 is a deficient number, since it is larger than the sum of its proper divisors (4013306935).

404040395657 is a wasteful number, since it uses less digits than its factorization.

404040395657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126639.

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 404040395657 in words is "four hundred four billion, forty million, three hundred ninety-five thousand, six hundred fifty-seven".