913242389 has 2 divisors, whose sum is σ = 913242390. Its totient is φ = 913242388.

The previous prime is 913242349. The next prime is 913242403. The reversal of 913242389 is 983242319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 837639364 + 75603025 = 28942^2 + 8695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-913242389 is a prime.

It is a super-2 number, since 2×913242389² = 1668023322132854642, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (913242349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456621194 + 456621195.

It is an arithmetic number, because the mean of its divisors is an integer number (456621195).

Almost surely, 2^913242389 is an apocalyptic number.

It is an amenable number.

913242389 is a deficient number, since it is larger than the sum of its proper divisors (1).

913242389 is an equidigital number, since it uses as much as digits as its factorization.

913242389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 41.

The square root of 913242389 is about 30219.9005458324. The cubic root of 913242389 is about 970.2016759248.

The spelling of 913242389 in words is "nine hundred thirteen million, two hundred forty-two thousand, three hundred eighty-nine".