34969981 has 2 divisors, whose sum is σ = 34969982. Its totient is φ = 34969980.

The previous prime is 34969973. The next prime is 34970059. The reversal of 34969981 is 18996943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18567481 + 16402500 = 4309^2 + 4050^2 .

It is a cyclic number.

It is not a de Polignac number, because 34969981 - 2³ = 34969973 is a prime.

It is a super-2 number, since 2×34969981² = 2445799142280722, which contains 22 as substring.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34969931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17484990 + 17484991.

It is an arithmetic number, because the mean of its divisors is an integer number (17484991).

Almost surely, 2^34969981 is an apocalyptic number.

It is an amenable number.

34969981 is a deficient number, since it is larger than the sum of its proper divisors (1).

34969981 is an equidigital number, since it uses as much as digits as its factorization.

34969981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 49.

The square root of 34969981 is about 5913.5421703071. The cubic root of 34969981 is about 327.0130860415.

The spelling of 34969981 in words is "thirty-four million, nine hundred sixty-nine thousand, nine hundred eighty-one".