30719929 has 2 divisors, whose sum is σ = 30719930. Its totient is φ = 30719928.

The previous prime is 30719917. The next prime is 30719939. The reversal of 30719929 is 92991703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30415225 + 304704 = 5515^2 + 552^2 .

It is a cyclic number.

It is not a de Polignac number, because 30719929 - 2¹⁵ = 30687161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30719891 and 30719900.

It is not a weakly prime, because it can be changed into another prime (30719939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15359964 + 15359965.

It is an arithmetic number, because the mean of its divisors is an integer number (15359965).

Almost surely, 2^30719929 is an apocalyptic number.

It is an amenable number.

30719929 is a deficient number, since it is larger than the sum of its proper divisors (1).

30719929 is an equidigital number, since it uses as much as digits as its factorization.

30719929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 30719929 is about 5542.5561792372. The cubic root of 30719929 is about 313.1891700124.

The spelling of 30719929 in words is "thirty million, seven hundred nineteen thousand, nine hundred twenty-nine".