34939621 has 2 divisors, whose sum is σ = 34939622. Its totient is φ = 34939620.

The previous prime is 34939609. The next prime is 34939627. The reversal of 34939621 is 12693943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25391521 + 9548100 = 5039^2 + 3090^2 .

It is an emirp because it is prime and its reverse (12693943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34939621 - 2⁵ = 34939589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34939627) 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, 17469810 + 17469811.

It is an arithmetic number, because the mean of its divisors is an integer number (17469811).

Almost surely, 2^34939621 is an apocalyptic number.

It is an amenable number.

34939621 is a deficient number, since it is larger than the sum of its proper divisors (1).

34939621 is an equidigital number, since it uses as much as digits as its factorization.

34939621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 37.

The square root of 34939621 is about 5910.9746235287. The cubic root of 34939621 is about 326.9184239771.

The spelling of 34939621 in words is "thirty-four million, nine hundred thirty-nine thousand, six hundred twenty-one".