400454813859 has 16 divisors (see below), whose sum is σ = 535054633344. Its totient is φ = 266412876800.

The previous prime is 400454813833. The next prime is 400454813861. The reversal of 400454813859 is 958318454004.

It is a cyclic number.

It is not a de Polignac number, because 400454813859 - 2¹⁵ = 400454781091 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (400454813359) 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, 3659392 + ... + 3767234.

It is an arithmetic number, because the mean of its divisors is an integer number (33440914584).

Almost surely, 2^400454813859 is an apocalyptic number.

400454813859 is a deficient number, since it is larger than the sum of its proper divisors (134599819485).

400454813859 is a wasteful number, since it uses less digits than its factorization.

400454813859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110418.

The product of its (nonzero) digits is 2764800, while the sum is 51.

The spelling of 400454813859 in words is "four hundred billion, four hundred fifty-four million, eight hundred thirteen thousand, eight hundred fifty-nine".