399493086 has 8 divisors (see below), whose sum is σ = 798986184. Its totient is φ = 133164360.

The previous prime is 399493051. The next prime is 399493093. The reversal of 399493086 is 680394993.

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

399493086 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33291085 + ... + 33291096.

It is an arithmetic number, because the mean of its divisors is an integer number (99873273).

Almost surely, 2^399493086 is an apocalyptic number.

399493086 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

399493086 is a wasteful number, since it uses less digits than its factorization.

399493086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66582186.

The product of its (nonzero) digits is 1259712, while the sum is 51.

The square root of 399493086 is about 19987.3231324257. The cubic root of 399493086 is about 736.4949202983.

The spelling of 399493086 in words is "three hundred ninety-nine million, four hundred ninety-three thousand, eighty-six".