30949859 has 2 divisors, whose sum is σ = 30949860. Its totient is φ = 30949858.

The previous prime is 30949781. The next prime is 30949903. The reversal of 30949859 is 95894903.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30949859 - 2⁸ = 30949603 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30949159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15474929 + 15474930.

It is an arithmetic number, because the mean of its divisors is an integer number (15474930).

Almost surely, 2^30949859 is an apocalyptic number.

30949859 is a deficient number, since it is larger than the sum of its proper divisors (1).

30949859 is an equidigital number, since it uses as much as digits as its factorization.

30949859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 30949859 is about 5563.2597458684. The cubic root of 30949859 is about 313.9686061355.

The spelling of 30949859 in words is "thirty million, nine hundred forty-nine thousand, eight hundred fifty-nine".