400732423 has 8 divisors (see below), whose sum is σ = 493209248. Its totient is φ = 317062944.

The previous prime is 400732391. The next prime is 400732433. The reversal of 400732423 is 324237004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400732423 - 2⁵ = 400732391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400732433) 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, 2201736 + ... + 2201917.

It is an arithmetic number, because the mean of its divisors is an integer number (61651156).

Almost surely, 2^400732423 is an apocalyptic number.

400732423 is a deficient number, since it is larger than the sum of its proper divisors (92476825).

400732423 is a wasteful number, since it uses less digits than its factorization.

400732423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4403673.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 400732423 is about 20018.3022007362. The cubic root of 400732423 is about 737.2557370914.

Adding to 400732423 its reverse (324237004), we get a palindrome (724969427).

The spelling of 400732423 in words is "four hundred million, seven hundred thirty-two thousand, four hundred twenty-three".