399952234 has 64 divisors (see below), whose sum is σ = 721239552. Its totient is φ = 164275200.

The previous prime is 399952169. The next prime is 399952237. The reversal of 399952234 is 432259993.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (399952237) 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 31 ways as a sum of consecutive naturals, for example, 1072072 + ... + 1072444.

It is an arithmetic number, because the mean of its divisors is an integer number (11269368).

Almost surely, 2^399952234 is an apocalyptic number.

399952234 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

399952234 is a deficient number, since it is larger than the sum of its proper divisors (321287318).

399952234 is a wasteful number, since it uses less digits than its factorization.

399952234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511.

The product of its digits is 524880, while the sum is 46.

The square root of 399952234 is about 19998.8058143480. The cubic root of 399952234 is about 736.7769699858.

The spelling of 399952234 in words is "three hundred ninety-nine million, nine hundred fifty-two thousand, two hundred thirty-four".