399786470015 has 8 divisors (see below), whose sum is σ = 479815697328. Its totient is φ = 319781220480.

The previous prime is 399786469997. The next prime is 399786470053. The reversal of 399786470015 is 510074687993.

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

It is not a de Polignac number, because 399786470015 - 2²⁰ = 399785421439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5957741 + ... + 6024470.

It is an arithmetic number, because the mean of its divisors is an integer number (59976962166).

Almost surely, 2^399786470015 is an apocalyptic number.

399786470015 is a deficient number, since it is larger than the sum of its proper divisors (80029227313).

399786470015 is a wasteful number, since it uses less digits than its factorization.

399786470015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11988889.

The product of its (nonzero) digits is 11430720, while the sum is 59.

The spelling of 399786470015 in words is "three hundred ninety-nine billion, seven hundred eighty-six million, four hundred seventy thousand, fifteen".