426030989 has 2 divisors, whose sum is σ = 426030990. Its totient is φ = 426030988.

The previous prime is 426030937. The next prime is 426031003. The reversal of 426030989 is 989030624.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 297390025 + 128640964 = 17245^2 + 11342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426030989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426030929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213015494 + 213015495.

It is an arithmetic number, because the mean of its divisors is an integer number (213015495).

Almost surely, 2^426030989 is an apocalyptic number.

It is an amenable number.

426030989 is a deficient number, since it is larger than the sum of its proper divisors (1).

426030989 is an equidigital number, since it uses as much as digits as its factorization.

426030989 is an evil number, because the sum of its binary digits is even.

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

The square root of 426030989 is about 20640.5181378763. The cubic root of 426030989 is about 752.4547650354.

The spelling of 426030989 in words is "four hundred twenty-six million, thirty thousand, nine hundred eighty-nine".