326492989 has 2 divisors, whose sum is σ = 326492990. Its totient is φ = 326492988.

The previous prime is 326492977. The next prime is 326493001. The reversal of 326492989 is 989294623.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (326492977) and next prime (326493001).

It can be written as a sum of positive squares in only one way, i.e., 180687364 + 145805625 = 13442^2 + 12075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-326492989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326492689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163246494 + 163246495.

It is an arithmetic number, because the mean of its divisors is an integer number (163246495).

Almost surely, 2^326492989 is an apocalyptic number.

It is an amenable number.

326492989 is a deficient number, since it is larger than the sum of its proper divisors (1).

326492989 is an equidigital number, since it uses as much as digits as its factorization.

326492989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 52.

The square root of 326492989 is about 18069.1169955812. The cubic root of 326492989 is about 688.5856268958.

The spelling of 326492989 in words is "three hundred twenty-six million, four hundred ninety-two thousand, nine hundred eighty-nine".