399141930 has 64 divisors (see below), whose sum is σ = 1100044800. Its totient is φ = 91667520.

The previous prime is 399141913. The next prime is 399141943. The reversal of 399141930 is 39141993.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25560 + ... + 38099.

It is an arithmetic number, because the mean of its divisors is an integer number (17188200).

Almost surely, 2^399141930 is an apocalyptic number.

399141930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

399141930 is an abundant number, since it is smaller than the sum of its proper divisors (700902870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399141930 is a wasteful number, since it uses less digits than its factorization.

399141930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63699.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 399141930 is about 19978.5367332045. The cubic root of 399141930 is about 736.2790630585.

The spelling of 399141930 in words is "three hundred ninety-nine million, one hundred forty-one thousand, nine hundred thirty".