400425454 has 32 divisors (see below), whose sum is σ = 709811424. Its totient is φ = 167018880.

The previous prime is 400425407. The next prime is 400425457. The reversal of 400425454 is 454524004.

It is a super-2 number, since 2×400425454² = 320681088422212232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400425457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45432 + ... + 53524.

It is an arithmetic number, because the mean of its divisors is an integer number (22181607).

Almost surely, 2^400425454 is an apocalyptic number.

400425454 is a deficient number, since it is larger than the sum of its proper divisors (309385970).

400425454 is a wasteful number, since it uses less digits than its factorization.

400425454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8292.

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 400425454 is about 20010.6335232046. The cubic root of 400425454 is about 737.0674381542.

Adding to 400425454 its reverse (454524004), we get a palindrome (854949458).

The spelling of 400425454 in words is "four hundred million, four hundred twenty-five thousand, four hundred fifty-four".