402000089 has 2 divisors, whose sum is σ = 402000090. Its totient is φ = 402000088.

The previous prime is 402000073. The next prime is 402000113. The reversal of 402000089 is 980000204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387499225 + 14500864 = 19685^2 + 3808^2 .

It is a cyclic number.

It is not a de Polignac number, because 402000089 - 2⁴ = 402000073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402000029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201000044 + 201000045.

It is an arithmetic number, because the mean of its divisors is an integer number (201000045).

Almost surely, 2^402000089 is an apocalyptic number.

It is an amenable number.

402000089 is a deficient number, since it is larger than the sum of its proper divisors (1).

402000089 is an equidigital number, since it uses as much as digits as its factorization.

402000089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 402000089 is about 20049.9398752216. The cubic root of 402000089 is about 738.0323236749.

The spelling of 402000089 in words is "four hundred two million, eighty-nine", and thus it is an aban number.