440478687 has 16 divisors (see below), whose sum is σ = 678385152. Its totient is φ = 251253120.

The previous prime is 440478683. The next prime is 440478737. The reversal of 440478687 is 786874044.

It is a happy number.

It is not a de Polignac number, because 440478687 - 2² = 440478683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440478683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392023 + ... + 393144.

It is an arithmetic number, because the mean of its divisors is an integer number (42399072).

Almost surely, 2^440478687 is an apocalyptic number.

440478687 is a deficient number, since it is larger than the sum of its proper divisors (237906465).

440478687 is a wasteful number, since it uses less digits than its factorization.

440478687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785198.

The product of its (nonzero) digits is 1204224, while the sum is 48.

The square root of 440478687 is about 20987.5841153764. The cubic root of 440478687 is about 760.8662139919.

The spelling of 440478687 in words is "four hundred forty million, four hundred seventy-eight thousand, six hundred eighty-seven".