399435245515 has 16 divisors (see below), whose sum is σ = 510804154368. Its totient is φ = 299151498976.

The previous prime is 399435245509. The next prime is 399435245527. The reversal of 399435245515 is 515542534993.

It is not a de Polignac number, because 399435245515 - 2¹⁵ = 399435212747 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 36945127 + ... + 36955936.

It is an arithmetic number, because the mean of its divisors is an integer number (31925259648).

Almost surely, 2^399435245515 is an apocalyptic number.

399435245515 is a deficient number, since it is larger than the sum of its proper divisors (111368908853).

399435245515 is a wasteful number, since it uses less digits than its factorization.

399435245515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73901138.

The product of its digits is 14580000, while the sum is 55.

The spelling of 399435245515 in words is "three hundred ninety-nine billion, four hundred thirty-five million, two hundred forty-five thousand, five hundred fifteen".