399375146 has 8 divisors (see below), whose sum is σ = 604661760. Its totient is φ = 197821228.

The previous prime is 399375133. The next prime is 399375157. The reversal of 399375146 is 641573993.

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

It is a self number, because there is not a number n which added to its sum of digits gives 399375146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932906 + ... + 933333.

It is an arithmetic number, because the mean of its divisors is an integer number (75582720).

Almost surely, 2^399375146 is an apocalyptic number.

399375146 is a deficient number, since it is larger than the sum of its proper divisors (205286614).

399375146 is a wasteful number, since it uses less digits than its factorization.

399375146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866348.

The product of its digits is 612360, while the sum is 47.

The square root of 399375146 is about 19984.3725445659. The cubic root of 399375146 is about 736.4224361400.

The spelling of 399375146 in words is "three hundred ninety-nine million, three hundred seventy-five thousand, one hundred forty-six".