34591421 has 2 divisors, whose sum is σ = 34591422. Its totient is φ = 34591420.

The previous prime is 34591399. The next prime is 34591423. The reversal of 34591421 is 12419543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34351321 + 240100 = 5861^2 + 490^2 .

It is a cyclic number.

It is not a de Polignac number, because 34591421 - 2²² = 30397117 is a prime.

Together with 34591423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34591423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17295710 + 17295711.

It is an arithmetic number, because the mean of its divisors is an integer number (17295711).

Almost surely, 2^34591421 is an apocalyptic number.

It is an amenable number.

34591421 is a deficient number, since it is larger than the sum of its proper divisors (1).

34591421 is an equidigital number, since it uses as much as digits as its factorization.

34591421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 34591421 is about 5881.4471858549. The cubic root of 34591421 is about 325.8287990392.

The spelling of 34591421 in words is "thirty-four million, five hundred ninety-one thousand, four hundred twenty-one".