397337985450 has 288 divisors, whose sum is σ = 1288821081600. Its totient is φ = 85732421760.

The previous prime is 397337985419. The next prime is 397337985491. The reversal of 397337985450 is 54589733793.

397337985450 is a `hidden beast` number, since 3 + 9 + 7 + 33 + 79 + 85 + 450 = 666.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 16925821 + ... + 16949279.

It is an arithmetic number, because the mean of its divisors is an integer number (4475073200).

Almost surely, 2^397337985450 is an apocalyptic number.

397337985450 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 397337985450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644410540800).

397337985450 is an abundant number, since it is smaller than the sum of its proper divisors (891483096150).

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

397337985450 is a wasteful number, since it uses less digits than its factorization.

397337985450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23786 (or 23778 counting only the distinct ones).

The product of its (nonzero) digits is 85730400, while the sum is 63.

The spelling of 397337985450 in words is "three hundred ninety-seven billion, three hundred thirty-seven million, nine hundred eighty-five thousand, four hundred fifty".