397598742450 has 720 divisors, whose sum is σ = 1392063167880. Its totient is φ = 83398533120.

The previous prime is 397598742449. The next prime is 397598742467. The reversal of 397598742450 is 54247895793.

397598742450 is a `hidden beast` number, since 3 + 9 + 75 + 98 + 7 + 424 + 50 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 20218280481 + 377380461969 = 142191^2 + 614313^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 359 ways as a sum of consecutive naturals, for example, 590785314 + ... + 590785986.

Almost surely, 2^397598742450 is an apocalyptic number.

397598742450 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 397598742450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (696031583940).

397598742450 is an abundant number, since it is smaller than the sum of its proper divisors (994464425430).

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

397598742450 is a wasteful number, since it uses less digits than its factorization.

397598742450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953 (or 932 counting only the distinct ones).

The product of its (nonzero) digits is 76204800, while the sum is 63.

The spelling of 397598742450 in words is "three hundred ninety-seven billion, five hundred ninety-eight million, seven hundred forty-two thousand, four hundred fifty".