399786470000 has 200 divisors, whose sum is σ = 981605360736. Its totient is φ = 157667328000.

The previous prime is 399786469997. The next prime is 399786470053. The reversal of 399786470000 is 74687993.

It is a tau number, because it is divible by the number of its divisors (200).

It is a congruent 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 39 ways as a sum of consecutive naturals, for example, 326889389 + ... + 326890611.

Almost surely, 2^399786470000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399786470000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490802680368).

399786470000 is an abundant number, since it is smaller than the sum of its proper divisors (581818890736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399786470000 is a wasteful number, since it uses less digits than its factorization.

399786470000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685 (or 1664 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 399786470000 in words is "three hundred ninety-nine billion, seven hundred eighty-six million, four hundred seventy thousand".