397047149980 has 432 divisors, whose sum is σ = 1013991229440. Its totient is φ = 130012646400.

The previous prime is 397047149971. The next prime is 397047149987. The reversal of 397047149980 is 89941740793.

It is a super-2 number, since 2×397047149980² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397047149987) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5592213345 + ... + 5592213415.

It is an arithmetic number, because the mean of its divisors is an integer number (2347201920).

Almost surely, 2^397047149980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397047149980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506995614720).

397047149980 is an abundant number, since it is smaller than the sum of its proper divisors (616944079460).

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

397047149980 is a wasteful number, since it uses less digits than its factorization.

397047149980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 397047149980 in words is "three hundred ninety-seven billion, forty-seven million, one hundred forty-nine thousand, nine hundred eighty".