440054978 has 12 divisors (see below), whose sum is σ = 725545590. Its totient is φ = 200024880.

The previous prime is 440054963. The next prime is 440054987. The reversal of 440054978 is 879450044.

It can be written as a sum of positive squares in only one way, i.e., 440034529 + 20449 = 20977^2 + 143^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 908963 + ... + 909446.

Almost surely, 2^440054978 is an apocalyptic number.

440054978 is a deficient number, since it is larger than the sum of its proper divisors (285490612).

440054978 is a wasteful number, since it uses less digits than its factorization.

440054978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818433 (or 1818422 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 440054978 is about 20977.4874091250. The cubic root of 440054978 is about 760.6221694270.

The spelling of 440054978 in words is "four hundred forty million, fifty-four thousand, nine hundred seventy-eight".