426369689 has 2 divisors, whose sum is σ = 426369690. Its totient is φ = 426369688.

The previous prime is 426369677. The next prime is 426369703. The reversal of 426369689 is 986963624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 426216025 + 153664 = 20645^2 + 392^2 .

It is a cyclic number.

It is not a de Polignac number, because 426369689 - 2²⁴ = 409592473 is a prime.

It is a super-2 number, since 2×426369689² = 363582223395913442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 426369689.

It is not a weakly prime, because it can be changed into another prime (426369649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213184844 + 213184845.

It is an arithmetic number, because the mean of its divisors is an integer number (213184845).

Almost surely, 2^426369689 is an apocalyptic number.

It is an amenable number.

426369689 is a deficient number, since it is larger than the sum of its proper divisors (1).

426369689 is an equidigital number, since it uses as much as digits as its factorization.

426369689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3359232, while the sum is 53.

The square root of 426369689 is about 20648.7212436993. The cubic root of 426369689 is about 752.6541158865.

It can be divided in two parts, 42636 and 9689, that added together give a palindrome (52325).

The spelling of 426369689 in words is "four hundred twenty-six million, three hundred sixty-nine thousand, six hundred eighty-nine".