30490769 has 2 divisors, whose sum is σ = 30490770. Its totient is φ = 30490768.

The previous prime is 30490739. The next prime is 30490771. The reversal of 30490769 is 96709403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23668225 + 6822544 = 4865^2 + 2612^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30490769 is a prime.

It is a super-2 number, since 2×30490769² = 1859373988422722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 30490771, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30490729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15245384 + 15245385.

It is an arithmetic number, because the mean of its divisors is an integer number (15245385).

Almost surely, 2^30490769 is an apocalyptic number.

It is an amenable number.

30490769 is a deficient number, since it is larger than the sum of its proper divisors (1).

30490769 is an equidigital number, since it uses as much as digits as its factorization.

30490769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 30490769 is about 5521.8447098773. The cubic root of 30490769 is about 312.4084647107.

The spelling of 30490769 in words is "thirty million, four hundred ninety thousand, seven hundred sixty-nine".