30439769 has 2 divisors, whose sum is σ = 30439770. Its totient is φ = 30439768.

The previous prime is 30439709. The next prime is 30439777. The reversal of 30439769 is 96793403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24870169 + 5569600 = 4987^2 + 2360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30439769 is a prime.

It is a super-2 number, since 2×30439769² = 1853159073546722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30439709) 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, 15219884 + 15219885.

It is an arithmetic number, because the mean of its divisors is an integer number (15219885).

Almost surely, 2^30439769 is an apocalyptic number.

It is an amenable number.

30439769 is a deficient number, since it is larger than the sum of its proper divisors (1).

30439769 is an equidigital number, since it uses as much as digits as its factorization.

30439769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 30439769 is about 5517.2247552551. The cubic root of 30439769 is about 312.2341854806.

The spelling of 30439769 in words is "thirty million, four hundred thirty-nine thousand, seven hundred sixty-nine".