30634889 has 2 divisors, whose sum is σ = 30634890. Its totient is φ = 30634888.

The previous prime is 30634883. The next prime is 30634909. The reversal of 30634889 is 98843603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29214025 + 1420864 = 5405^2 + 1192^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30634889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30634883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15317444 + 15317445.

It is an arithmetic number, because the mean of its divisors is an integer number (15317445).

Almost surely, 2^30634889 is an apocalyptic number.

It is an amenable number.

30634889 is a deficient number, since it is larger than the sum of its proper divisors (1).

30634889 is an equidigital number, since it uses as much as digits as its factorization.

30634889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 30634889 is about 5534.8793121440. The cubic root of 30634889 is about 312.8999091343.

The spelling of 30634889 in words is "thirty million, six hundred thirty-four thousand, eight hundred eighty-nine".