401442589 has 4 divisors (see below), whose sum is σ = 401483200. Its totient is φ = 401401980.

The previous prime is 401442581. The next prime is 401442611. The reversal of 401442589 is 985244104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 401442589 - 2³ = 401442581 is a prime.

It is a super-2 number, since 2×401442589² = 322312304526045842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401442581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5212 + ... + 28810.

It is an arithmetic number, because the mean of its divisors is an integer number (100370800).

Almost surely, 2^401442589 is an apocalyptic number.

It is an amenable number.

401442589 is a deficient number, since it is larger than the sum of its proper divisors (40611).

401442589 is a wasteful number, since it uses less digits than its factorization.

401442589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40610.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 401442589 is about 20036.0322668936. The cubic root of 401442589 is about 737.6909942560.

The spelling of 401442589 in words is "four hundred one million, four hundred forty-two thousand, five hundred eighty-nine".