30969493 has 2 divisors, whose sum is σ = 30969494. Its totient is φ = 30969492.

The previous prime is 30969469. The next prime is 30969509. The reversal of 30969493 is 39496903.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22071204 + 8898289 = 4698^2 + 2983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30969493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30969413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15484746 + 15484747.

It is an arithmetic number, because the mean of its divisors is an integer number (15484747).

Almost surely, 2^30969493 is an apocalyptic number.

It is an amenable number.

30969493 is a deficient number, since it is larger than the sum of its proper divisors (1).

30969493 is an equidigital number, since it uses as much as digits as its factorization.

30969493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 43.

The square root of 30969493 is about 5565.0240790135. The cubic root of 30969493 is about 314.0349839989.

The spelling of 30969493 in words is "thirty million, nine hundred sixty-nine thousand, four hundred ninety-three".