401982588 has 90 divisors (see below), whose sum is σ = 1203844488. Its totient is φ = 114579360.

The previous prime is 401982577. The next prime is 401982589. The reversal of 401982588 is 885289104.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401982589) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 954618 + ... + 955038.

Almost surely, 2^401982588 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 401982588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (601922244).

401982588 is an abundant number, since it is smaller than the sum of its proper divisors (801861900).

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

401982588 is an equidigital number, since it uses as much as digits as its factorization.

401982588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 401982588 is about 20049.5034352475. The cubic root of 401982588 is about 738.0216134856.

The spelling of 401982588 in words is "four hundred one million, nine hundred eighty-two thousand, five hundred eighty-eight".