399476829 has 16 divisors (see below), whose sum is σ = 575970048. Its totient is φ = 245317632.

The previous prime is 399476813. The next prime is 399476839. The reversal of 399476829 is 928674993.

It is not a de Polignac number, because 399476829 - 2⁴ = 399476813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399476839) 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, 80932 + ... + 85725.

It is an arithmetic number, because the mean of its divisors is an integer number (35998128).

Almost surely, 2^399476829 is an apocalyptic number.

It is an amenable number.

399476829 is a deficient number, since it is larger than the sum of its proper divisors (176493219).

399476829 is a wasteful number, since it uses less digits than its factorization.

399476829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166724.

The product of its digits is 5878656, while the sum is 57.

The square root of 399476829 is about 19986.9164455151. The cubic root of 399476829 is about 736.4849298373.

The spelling of 399476829 in words is "three hundred ninety-nine million, four hundred seventy-six thousand, eight hundred twenty-nine".