30486689 has 2 divisors, whose sum is σ = 30486690. Its totient is φ = 30486688.

The previous prime is 30486679. The next prime is 30486719. The reversal of 30486689 is 98668403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25928464 + 4558225 = 5092^2 + 2135^2 .

It is a cyclic number.

It is not a de Polignac number, because 30486689 - 2⁸ = 30486433 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30486649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15243344 + 15243345.

It is an arithmetic number, because the mean of its divisors is an integer number (15243345).

Almost surely, 2^30486689 is an apocalyptic number.

It is an amenable number.

30486689 is a deficient number, since it is larger than the sum of its proper divisors (1).

30486689 is an equidigital number, since it uses as much as digits as its factorization.

30486689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 30486689 is about 5521.4752557627. The cubic root of 30486689 is about 312.3945295271.

The spelling of 30486689 in words is "thirty million, four hundred eighty-six thousand, six hundred eighty-nine".