399227313 has 8 divisors (see below), whose sum is σ = 532584000. Its totient is φ = 266011088.

The previous prime is 399227287. The next prime is 399227329. The reversal of 399227313 is 313722993.

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

It is a cyclic number.

It is not a de Polignac number, because 399227313 - 2⁵ = 399227281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (399227113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28293 + ... + 39986.

It is an arithmetic number, because the mean of its divisors is an integer number (66573000).

Almost surely, 2^399227313 is an apocalyptic number.

It is an amenable number.

399227313 is a deficient number, since it is larger than the sum of its proper divisors (133356687).

399227313 is a wasteful number, since it uses less digits than its factorization.

399227313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70231.

The product of its digits is 61236, while the sum is 39.

The square root of 399227313 is about 19980.6734871475. The cubic root of 399227313 is about 736.3315600346.

The spelling of 399227313 in words is "three hundred ninety-nine million, two hundred twenty-seven thousand, three hundred thirteen".