400004254 has 16 divisors (see below), whose sum is σ = 684170928. Its totient is φ = 173757312.

The previous prime is 400004249. The next prime is 400004257. The reversal of 400004254 is 452400004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400004257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452052 + ... + 452935.

It is an arithmetic number, because the mean of its divisors is an integer number (42760683).

Almost surely, 2^400004254 is an apocalyptic number.

400004254 is a deficient number, since it is larger than the sum of its proper divisors (284166674).

400004254 is a wasteful number, since it uses less digits than its factorization.

400004254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905019.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 400004254 is about 20000.1063497172. The cubic root of 400004254 is about 736.8089116972.

Adding to 400004254 its reverse (452400004), we get a palindrome (852404258).

The spelling of 400004254 in words is "four hundred million, four thousand, two hundred fifty-four".