400454813860 has 12 divisors (see below), whose sum is σ = 840955109148. Its totient is φ = 160181925536.

The previous prime is 400454813833. The next prime is 400454813861. The reversal of 400454813860 is 68318454004.

It can be written as a sum of positive squares in 2 ways, for example, as 121360263424 + 279094550436 = 348368^2 + 528294^2 .

It is not an unprimeable number, because it can be changed into a prime (400454813861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10011370327 + ... + 10011370366.

It is an arithmetic number, because the mean of its divisors is an integer number (70079592429).

Almost surely, 2^400454813860 is an apocalyptic number.

It is an amenable number.

400454813860 is an abundant number, since it is smaller than the sum of its proper divisors (440500295288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400454813860 is a wasteful number, since it uses less digits than its factorization.

400454813860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20022740702 (or 20022740700 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 43.

The spelling of 400454813860 in words is "four hundred billion, four hundred fifty-four million, eight hundred thirteen thousand, eight hundred sixty".