34440391 has 2 divisors, whose sum is σ = 34440392. Its totient is φ = 34440390.

The previous prime is 34440383. The next prime is 34440397. The reversal of 34440391 is 19304443.

It is a strong prime.

It is an emirp because it is prime and its reverse (19304443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34440391 - 2³ = 34440383 is a prime.

It is a super-2 number, since 2×34440391² = 2372281064465762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34440397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17220195 + 17220196.

It is an arithmetic number, because the mean of its divisors is an integer number (17220196).

Almost surely, 2^34440391 is an apocalyptic number.

34440391 is a deficient number, since it is larger than the sum of its proper divisors (1).

34440391 is an equidigital number, since it uses as much as digits as its factorization.

34440391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 34440391 is about 5868.5936134648. The cubic root of 34440391 is about 325.3539056023.

The spelling of 34440391 in words is "thirty-four million, four hundred forty thousand, three hundred ninety-one".