30709969 has 2 divisors, whose sum is σ = 30709970. Its totient is φ = 30709968.

The previous prime is 30709883. The next prime is 30709979. The reversal of 30709969 is 96990703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15499969 + 15210000 = 3937^2 + 3900^2 .

It is a cyclic number.

It is not a de Polignac number, because 30709969 - 2¹⁹ = 30185681 is a prime.

It is a super-2 number, since 2×30709969² = 1886204391961922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30709979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15354984 + 15354985.

It is an arithmetic number, because the mean of its divisors is an integer number (15354985).

Almost surely, 2^30709969 is an apocalyptic number.

It is an amenable number.

30709969 is a deficient number, since it is larger than the sum of its proper divisors (1).

30709969 is an equidigital number, since it uses as much as digits as its factorization.

30709969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 30709969 is about 5541.6576040026. The cubic root of 30709969 is about 313.1553190085.

The spelling of 30709969 in words is "thirty million, seven hundred nine thousand, nine hundred sixty-nine".