34988021 has 2 divisors, whose sum is σ = 34988022. Its totient is φ = 34988020.

The previous prime is 34988017. The next prime is 34988033. The reversal of 34988021 is 12088943.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26635921 + 8352100 = 5161^2 + 2890^2 .

It is an emirp because it is prime and its reverse (12088943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34988021 - 2² = 34988017 is a prime.

It is a super-2 number, since 2×34988021² = 2448323226992882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34988071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17494010 + 17494011.

It is an arithmetic number, because the mean of its divisors is an integer number (17494011).

Almost surely, 2^34988021 is an apocalyptic number.

It is an amenable number.

34988021 is a deficient number, since it is larger than the sum of its proper divisors (1).

34988021 is an equidigital number, since it uses as much as digits as its factorization.

34988021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 34988021 is about 5915.0672861769. The cubic root of 34988021 is about 327.0693085669.

The spelling of 34988021 in words is "thirty-four million, nine hundred eighty-eight thousand, twenty-one".