399199665300 has 288 divisors, whose sum is σ = 1284517785600. Its totient is φ = 95299223040.

The previous prime is 399199665283. The next prime is 399199665307. The reversal of 399199665300 is 3566991993.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399199665307) 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, 7743409 + ... + 7794791.

It is an arithmetic number, because the mean of its divisors is an integer number (4460131200).

Almost surely, 2^399199665300 is an apocalyptic number.

399199665300 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399199665300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (642258892800).

399199665300 is an abundant number, since it is smaller than the sum of its proper divisors (885318120300).

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

399199665300 is a wasteful number, since it uses less digits than its factorization.

399199665300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51495 (or 51488 counting only the distinct ones).

The product of its (nonzero) digits is 10628820, while the sum is 60.

The spelling of 399199665300 in words is "three hundred ninety-nine billion, one hundred ninety-nine million, six hundred sixty-five thousand, three hundred".