399900348325 has 6 divisors (see below), whose sum is σ = 495876431954. Its totient is φ = 319920278640.

The previous prime is 399900348319. The next prime is 399900348377. The reversal of 399900348325 is 523843009993.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 190633249 + 399709715076 = 13807^2 + 632226^2 .

It is not a de Polignac number, because 399900348325 - 2⁵ = 399900348293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7998006942 + ... + 7998006991.

Almost surely, 2^399900348325 is an apocalyptic number.

It is an amenable number.

399900348325 is a deficient number, since it is larger than the sum of its proper divisors (95976083629).

399900348325 is a wasteful number, since it uses less digits than its factorization.

399900348325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15996013943 (or 15996013938 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 55.

It can be divided in two parts, 399900 and 348325, that added together give a square (748225 = 865²).

The spelling of 399900348325 in words is "three hundred ninety-nine billion, nine hundred million, three hundred forty-eight thousand, three hundred twenty-five".