399713529 has 16 divisors (see below), whose sum is σ = 538213248. Its totient is φ = 263855232.

The previous prime is 399713519. The next prime is 399713533. The reversal of 399713529 is 925317993.

It is not a de Polignac number, because 399713529 - 2⁴ = 399713513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (399713519) 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 15 ways as a sum of consecutive naturals, for example, 199159 + ... + 201155.

It is an arithmetic number, because the mean of its divisors is an integer number (33638328).

Almost surely, 2^399713529 is an apocalyptic number.

It is an amenable number.

399713529 is a deficient number, since it is larger than the sum of its proper divisors (138499719).

399713529 is a wasteful number, since it uses less digits than its factorization.

399713529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624.

The product of its digits is 459270, while the sum is 48.

The square root of 399713529 is about 19992.8369422651. The cubic root of 399713529 is about 736.6303630228.

The spelling of 399713529 in words is "three hundred ninety-nine million, seven hundred thirteen thousand, five hundred twenty-nine".