400232999 has 2 divisors, whose sum is σ = 400233000. Its totient is φ = 400232998.

The previous prime is 400232993. The next prime is 400233037. The reversal of 400232999 is 999232004.

It is an a-pointer prime, because the next prime (400233037) can be obtained adding 400232999 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400232999 - 2⁴ = 400232983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400232993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200116499 + 200116500.

It is an arithmetic number, because the mean of its divisors is an integer number (200116500).

Almost surely, 2^400232999 is an apocalyptic number.

400232999 is a deficient number, since it is larger than the sum of its proper divisors (1).

400232999 is an equidigital number, since it uses as much as digits as its factorization.

400232999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 400232999 is about 20005.8241269886. The cubic root of 400232999 is about 736.9493345684.

The spelling of 400232999 in words is "four hundred million, two hundred thirty-two thousand, nine hundred ninety-nine".