402000289 has 4 divisors (see below), whose sum is σ = 402769456. Its totient is φ = 401231124.

The previous prime is 402000251. The next prime is 402000293. The reversal of 402000289 is 982000204.

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 402000289 - 2⁷ = 402000161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402000239) 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, 383799 + ... + 384844.

It is an arithmetic number, because the mean of its divisors is an integer number (100692364).

Almost surely, 2^402000289 is an apocalyptic number.

It is an amenable number.

402000289 is a deficient number, since it is larger than the sum of its proper divisors (769167).

402000289 is an equidigital number, since it uses as much as digits as its factorization.

402000289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769166.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 402000289 is about 20049.9448627671. The cubic root of 402000289 is about 738.0324460682.

The spelling of 402000289 in words is "four hundred two million, two hundred eighty-nine", and thus it is an aban number.