400868452 has 12 divisors (see below), whose sum is σ = 716446080. Its totient is φ = 196169576.

The previous prime is 400868443. The next prime is 400868459. The reversal of 400868452 is 254868004.

It is not an unprimeable number, because it can be changed into a prime (400868459) 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, 1065952 + ... + 1066327.

It is an arithmetic number, because the mean of its divisors is an integer number (59703840).

Almost surely, 2^400868452 is an apocalyptic number.

It is an amenable number.

400868452 is a deficient number, since it is larger than the sum of its proper divisors (315577628).

400868452 is a wasteful number, since it uses less digits than its factorization.

400868452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132330 (or 2132328 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 400868452 is about 20021.6995282618. The cubic root of 400868452 is about 737.3391483732.

The spelling of 400868452 in words is "four hundred million, eight hundred sixty-eight thousand, four hundred fifty-two".