34493981 has 2 divisors, whose sum is σ = 34493982. Its totient is φ = 34493980.

The previous prime is 34493957. The next prime is 34494013. The reversal of 34493981 is 18939443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33756100 + 737881 = 5810^2 + 859^2 .

It is an emirp because it is prime and its reverse (18939443) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34493981 - 2¹⁰ = 34492957 is a prime.

It is a super-2 number, since 2×34493981² = 2379669450456722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34493941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17246990 + 17246991.

It is an arithmetic number, because the mean of its divisors is an integer number (17246991).

Almost surely, 2^34493981 is an apocalyptic number.

It is an amenable number.

34493981 is a deficient number, since it is larger than the sum of its proper divisors (1).

34493981 is an equidigital number, since it uses as much as digits as its factorization.

34493981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 41.

The square root of 34493981 is about 5873.1576685800. The cubic root of 34493981 is about 325.5225707428.

The spelling of 34493981 in words is "thirty-four million, four hundred ninety-three thousand, nine hundred eighty-one".