34379621 has 2 divisors, whose sum is σ = 34379622. Its totient is φ = 34379620.

The previous prime is 34379617. The next prime is 34379633. The reversal of 34379621 is 12697343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34281025 + 98596 = 5855^2 + 314^2 .

It is an emirp because it is prime and its reverse (12697343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34379621 - 2² = 34379617 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34379671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17189810 + 17189811.

It is an arithmetic number, because the mean of its divisors is an integer number (17189811).

Almost surely, 2^34379621 is an apocalyptic number.

It is an amenable number.

34379621 is a deficient number, since it is larger than the sum of its proper divisors (1).

34379621 is an equidigital number, since it uses as much as digits as its factorization.

34379621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 35.

The square root of 34379621 is about 5863.4137667403. The cubic root of 34379621 is about 325.1624308372.

The spelling of 34379621 in words is "thirty-four million, three hundred seventy-nine thousand, six hundred twenty-one".