400829323 has 4 divisors (see below), whose sum is σ = 401646168. Its totient is φ = 400012480.

The previous prime is 400829311. The next prime is 400829333. The reversal of 400829323 is 323928004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400829323 - 2⁵ = 400829291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400829333) 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, 407686 + ... + 408667.

It is an arithmetic number, because the mean of its divisors is an integer number (100411542).

Almost surely, 2^400829323 is an apocalyptic number.

400829323 is a deficient number, since it is larger than the sum of its proper divisors (816845).

400829323 is an equidigital number, since it uses as much as digits as its factorization.

400829323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816844.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 400829323 is about 20020.7223396160. The cubic root of 400829323 is about 737.3151568932.

The spelling of 400829323 in words is "four hundred million, eight hundred twenty-nine thousand, three hundred twenty-three".