408121589 has 4 divisors (see below), whose sum is σ = 414213024. Its totient is φ = 402030156.

The previous prime is 408121573. The next prime is 408121607. The reversal of 408121589 is 985121804.

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.

It is a cyclic number.

It is not a de Polignac number, because 408121589 - 2⁴ = 408121573 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 (408121529) 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, 3045617 + ... + 3045750.

It is an arithmetic number, because the mean of its divisors is an integer number (103553256).

Almost surely, 2^408121589 is an apocalyptic number.

It is an amenable number.

408121589 is a deficient number, since it is larger than the sum of its proper divisors (6091435).

408121589 is an equidigital number, since it uses as much as digits as its factorization.

408121589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6091434.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 408121589 is about 20202.0194287601. The cubic root of 408121589 is about 741.7596237034.

The spelling of 408121589 in words is "four hundred eight million, one hundred twenty-one thousand, five hundred eighty-nine".