30885929 has 2 divisors, whose sum is σ = 30885930. Its totient is φ = 30885928.

The previous prime is 30885893. The next prime is 30885949. The reversal of 30885929 is 92958803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30780304 + 105625 = 5548^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 30885929 - 2¹² = 30881833 is a prime.

It is a super-2 number, since 2×30885929² = 1907881220386082, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30885929.

It is not a weakly prime, because it can be changed into another prime (30885949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15442964 + 15442965.

It is an arithmetic number, because the mean of its divisors is an integer number (15442965).

Almost surely, 2^30885929 is an apocalyptic number.

It is an amenable number.

30885929 is a deficient number, since it is larger than the sum of its proper divisors (1).

30885929 is an equidigital number, since it uses as much as digits as its factorization.

30885929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 30885929 is about 5557.5110436238. The cubic root of 30885929 is about 313.7522793652.

The spelling of 30885929 in words is "thirty million, eight hundred eighty-five thousand, nine hundred twenty-nine".