399098926616850 has 384 divisors, whose sum is σ = 1168988459950080. Its totient is φ = 99774135383040.

The previous prime is 399098926616843. The next prime is 399098926616851. The reversal of 399098926616850 is 58616629890993.

399098926616850 is a `hidden beast` number, since 39 + 90 + 9 + 89 + 266 + 168 + 5 + 0 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 399098926616850.

It is not an unprimeable number, because it can be changed into a prime (399098926616851) by changing a digit.

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 191 ways as a sum of consecutive naturals, for example, 19633921387 + ... + 19633941713.

It is an arithmetic number, because the mean of its divisors is an integer number (3044240781120).

Almost surely, 2^{399098926616850} is an apocalyptic number.

399098926616850 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 399098926616850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (584494229975040).

399098926616850 is an abundant number, since it is smaller than the sum of its proper divisors (769889533333230).

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

399098926616850 is a wasteful number, since it uses less digits than its factorization.

399098926616850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23671 (or 23660 counting only the distinct ones).

The product of its (nonzero) digits is 2720977920, while the sum is 81.

The spelling of 399098926616850 in words is "three hundred ninety-nine trillion, ninety-eight billion, nine hundred twenty-six million, six hundred sixteen thousand, eight hundred fifty".