401988589 has 8 divisors (see below), whose sum is σ = 408051392. Its totient is φ = 395940960.

The previous prime is 401988569. The next prime is 401988599. The reversal of 401988589 is 985889104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 401988589 - 2¹⁵ = 401955821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401988569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56734 + ... + 63424.

It is an arithmetic number, because the mean of its divisors is an integer number (51006424).

Almost surely, 2^401988589 is an apocalyptic number.

It is an amenable number.

401988589 is a deficient number, since it is larger than the sum of its proper divisors (6062803).

401988589 is an equidigital number, since it uses as much as digits as its factorization.

401988589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7587.

The product of its (nonzero) digits is 829440, while the sum is 52.

The square root of 401988589 is about 20049.6530892682. The cubic root of 401988589 is about 738.0252859877.

The spelling of 401988589 in words is "four hundred one million, nine hundred eighty-eight thousand, five hundred eighty-nine".