396399959999 has 8 divisors (see below), whose sum is σ = 397853761920. Its totient is φ = 394946322336.

The previous prime is 396399959981. The next prime is 396399960007. The reversal of 396399959999 is 999959993693.

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

It is a cyclic number.

It is not a de Polignac number, because 396399959999 - 2¹⁶ = 396399894463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396399959909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6982322 + ... + 7038864.

It is an arithmetic number, because the mean of its divisors is an integer number (49731720240).

Almost surely, 2^396399959999 is an apocalyptic number.

396399959999 is a deficient number, since it is larger than the sum of its proper divisors (1453801921).

396399959999 is a wasteful number, since it uses less digits than its factorization.

396399959999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82129.

The product of its digits is 11622614670, while the sum is 89.

The spelling of 396399959999 in words is "three hundred ninety-six billion, three hundred ninety-nine million, nine hundred fifty-nine thousand, nine hundred ninety-nine".