399628473 has 8 divisors (see below), whose sum is σ = 556004928. Its totient is φ = 254835504.

The previous prime is 399628441. The next prime is 399628543. The reversal of 399628473 is 374826993.

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

It is not a de Polignac number, because 399628473 - 2⁵ = 399628441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (399628403) 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 7 ways as a sum of consecutive naturals, for example, 2895790 + ... + 2895927.

It is an arithmetic number, because the mean of its divisors is an integer number (69500616).

Almost surely, 2^399628473 is an apocalyptic number.

It is an amenable number.

399628473 is a deficient number, since it is larger than the sum of its proper divisors (156376455).

399628473 is a wasteful number, since it uses less digits than its factorization.

399628473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5791743.

The product of its digits is 1959552, while the sum is 51.

The square root of 399628473 is about 19990.7096672429. The cubic root of 399628473 is about 736.5781095360.

The spelling of 399628473 in words is "three hundred ninety-nine million, six hundred twenty-eight thousand, four hundred seventy-three".