426689933 has 2 divisors, whose sum is σ = 426689934. Its totient is φ = 426689932.

The previous prime is 426689917. The next prime is 426690023. The reversal of 426689933 is 339986624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 360316324 + 66373609 = 18982^2 + 8147^2 .

It is a cyclic number.

It is not a de Polignac number, because 426689933 - 2⁴ = 426689917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426689533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213344966 + 213344967.

It is an arithmetic number, because the mean of its divisors is an integer number (213344967).

Almost surely, 2^426689933 is an apocalyptic number.

It is an amenable number.

426689933 is a deficient number, since it is larger than the sum of its proper divisors (1).

426689933 is an equidigital number, since it uses as much as digits as its factorization.

426689933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 50.

The square root of 426689933 is about 20656.4743603549. The cubic root of 426689933 is about 752.8425068923.

The spelling of 426689933 in words is "four hundred twenty-six million, six hundred eighty-nine thousand, nine hundred thirty-three".