399266803125 has 96 divisors (see below), whose sum is σ = 740437608960. Its totient is φ = 212625000000.

The previous prime is 399266803079. The next prime is 399266803127. The reversal of 399266803125 is 521308662993.

It is not a de Polignac number, because 399266803125 - 2¹⁰ = 399266802101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399266803127) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 63362475 + ... + 63368775.

It is an arithmetic number, because the mean of its divisors is an integer number (7712891760).

Almost surely, 2^399266803125 is an apocalyptic number.

It is an amenable number.

399266803125 is a deficient number, since it is larger than the sum of its proper divisors (341170805835).

399266803125 is an frugal number, since it uses more digits than its factorization.

399266803125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7086 (or 7060 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 399266803125 in words is "three hundred ninety-nine billion, two hundred sixty-six million, eight hundred three thousand, one hundred twenty-five".