397559114820 has 384 divisors, whose sum is σ = 1440638976000. Its totient is φ = 90258364800.

The previous prime is 397559114801. The next prime is 397559114833. The reversal of 397559114820 is 28411955793.

It is a happy number.

397559114820 is a `hidden beast` number, since 3 + 9 + 7 + 5 + 591 + 1 + 48 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 127 ways as a sum of consecutive naturals, for example, 46228881 + ... + 46237479.

It is an arithmetic number, because the mean of its divisors is an integer number (3751664000).

Almost surely, 2^397559114820 is an apocalyptic number.

397559114820 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 397559114820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (720319488000).

397559114820 is an abundant number, since it is smaller than the sum of its proper divisors (1043079861180).

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

397559114820 is a wasteful number, since it uses less digits than its factorization.

397559114820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8787 (or 8767 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 397559114820 in words is "three hundred ninety-seven billion, five hundred fifty-nine million, one hundred fourteen thousand, eight hundred twenty".