398602569456 has 480 divisors, whose sum is σ = 1507591507968. Its totient is φ = 98940579840.

The previous prime is 398602569437. The next prime is 398602569461. The reversal of 398602569456 is 654965206893.

398602569456 is a `hidden beast` number, since 3 + 9 + 8 + 60 + 2 + 569 + 4 + 5 + 6 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 398602569393 and 398602569402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5981601 + ... + 6047871.

Almost surely, 2^398602569456 is an apocalyptic number.

398602569456 is a gapful number since it is divisible by the number (36) 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 398602569456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (753795753984).

398602569456 is an abundant number, since it is smaller than the sum of its proper divisors (1108988938512).

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

398602569456 is a wasteful number, since it uses less digits than its factorization.

398602569456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66331 (or 66313 counting only the distinct ones).

The product of its (nonzero) digits is 83980800, while the sum is 63.

The spelling of 398602569456 in words is "three hundred ninety-eight billion, six hundred two million, five hundred sixty-nine thousand, four hundred fifty-six".