30502489 has 2 divisors, whose sum is σ = 30502490. Its totient is φ = 30502488.

The previous prime is 30502447. The next prime is 30502499. The reversal of 30502489 is 98420503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25836889 + 4665600 = 5083^2 + 2160^2 .

It is an emirp because it is prime and its reverse (98420503) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30502489 - 2¹¹ = 30500441 is a prime.

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 30502489.

It is not a weakly prime, because it can be changed into another prime (30502499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15251244 + 15251245.

It is an arithmetic number, because the mean of its divisors is an integer number (15251245).

Almost surely, 2^30502489 is an apocalyptic number.

It is an amenable number.

30502489 is a deficient number, since it is larger than the sum of its proper divisors (1).

30502489 is an equidigital number, since it uses as much as digits as its factorization.

30502489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 30502489 is about 5522.9058474683. The cubic root of 30502489 is about 312.4484872957.

The spelling of 30502489 in words is "thirty million, five hundred two thousand, four hundred eighty-nine".