404896687 has 8 divisors (see below), whose sum is σ = 436199904. Its totient is φ = 373615968.

The previous prime is 404896649. The next prime is 404896697. The reversal of 404896687 is 786698404.

It is a happy number.

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 404896687 - 2¹⁵ = 404863919 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 (404896697) 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, 61518 + ... + 67780.

It is an arithmetic number, because the mean of its divisors is an integer number (54524988).

Almost surely, 2^404896687 is an apocalyptic number.

404896687 is a deficient number, since it is larger than the sum of its proper divisors (31303217).

404896687 is a wasteful number, since it uses less digits than its factorization.

404896687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11249.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The square root of 404896687 is about 20122.0448016597. The cubic root of 404896687 is about 739.8007054013.

The spelling of 404896687 in words is "four hundred four million, eight hundred ninety-six thousand, six hundred eighty-seven".