399863135 has 8 divisors (see below), whose sum is σ = 548383776. Its totient is φ = 274191840.

The previous prime is 399863129. The next prime is 399863147. The reversal of 399863135 is 531368993.

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

It is not a de Polignac number, because 399863135 - 2²² = 395668831 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 399863135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5712296 + ... + 5712365.

It is an arithmetic number, because the mean of its divisors is an integer number (68547972).

Almost surely, 2^399863135 is an apocalyptic number.

399863135 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

399863135 is a deficient number, since it is larger than the sum of its proper divisors (148520641).

399863135 is a wasteful number, since it uses less digits than its factorization.

399863135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11424673.

The product of its digits is 524880, while the sum is 47.

The square root of 399863135 is about 19996.5780822620. The cubic root of 399863135 is about 736.7222543131.

The spelling of 399863135 in words is "three hundred ninety-nine million, eight hundred sixty-three thousand, one hundred thirty-five".