399596847 has 16 divisors (see below), whose sum is σ = 603980160. Its totient is φ = 232962912.

The previous prime is 399596837. The next prime is 399596861. The reversal of 399596847 is 748695993.

It is not a de Polignac number, because 399596847 - 2¹⁶ = 399531311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399596837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268893 + ... + 270374.

It is an arithmetic number, because the mean of its divisors is an integer number (37748760).

Almost surely, 2^399596847 is an apocalyptic number.

399596847 is a deficient number, since it is larger than the sum of its proper divisors (204383313).

399596847 is a wasteful number, since it uses less digits than its factorization.

399596847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539302.

The product of its digits is 14696640, while the sum is 60.

The square root of 399596847 is about 19989.9186341516. The cubic root of 399596847 is about 736.5586784599.

The spelling of 399596847 in words is "three hundred ninety-nine million, five hundred ninety-six thousand, eight hundred forty-seven".