434626991 has 2 divisors, whose sum is σ = 434626992. Its totient is φ = 434626990.

The previous prime is 434626987. The next prime is 434626999. The reversal of 434626991 is 199626434.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 434626991 - 2² = 434626987 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 (434626999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217313495 + 217313496.

It is an arithmetic number, because the mean of its divisors is an integer number (217313496).

Almost surely, 2^434626991 is an apocalyptic number.

434626991 is a deficient number, since it is larger than the sum of its proper divisors (1).

434626991 is an equidigital number, since it uses as much as digits as its factorization.

434626991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 44.

The square root of 434626991 is about 20847.7094904932. The cubic root of 434626991 is about 757.4818497831.

The spelling of 434626991 in words is "four hundred thirty-four million, six hundred twenty-six thousand, nine hundred ninety-one".