402313189 has 2 divisors, whose sum is σ = 402313190. Its totient is φ = 402313188.

The previous prime is 402313139. The next prime is 402313207. The reversal of 402313189 is 981313204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399320289 + 2992900 = 19983^2 + 1730^2 .

It is a cyclic number.

It is not a de Polignac number, because 402313189 - 2¹⁹ = 401788901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402313189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402313129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201156594 + 201156595.

It is an arithmetic number, because the mean of its divisors is an integer number (201156595).

Almost surely, 2^402313189 is an apocalyptic number.

It is an amenable number.

402313189 is a deficient number, since it is larger than the sum of its proper divisors (1).

402313189 is an equidigital number, since it uses as much as digits as its factorization.

402313189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 402313189 is about 20057.7463589507. The cubic root of 402313189 is about 738.2238808086.

The spelling of 402313189 in words is "four hundred two million, three hundred thirteen thousand, one hundred eighty-nine".