30240389 has 2 divisors, whose sum is σ = 30240390. Its totient is φ = 30240388.

The previous prime is 30240349. The next prime is 30240401. The reversal of 30240389 is 98304203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27384289 + 2856100 = 5233^2 + 1690^2 .

It is a cyclic number.

It is not a de Polignac number, because 30240389 - 2²⁴ = 13463173 is a prime.

It is a super-2 number, since 2×30240389² = 1828962253742642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30240319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15120194 + 15120195.

It is an arithmetic number, because the mean of its divisors is an integer number (15120195).

Almost surely, 2^30240389 is an apocalyptic number.

It is an amenable number.

30240389 is a deficient number, since it is larger than the sum of its proper divisors (1).

30240389 is an equidigital number, since it uses as much as digits as its factorization.

30240389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 30240389 is about 5499.1262033163. The cubic root of 30240389 is about 311.5509820049.

The spelling of 30240389 in words is "thirty million, two hundred forty thousand, three hundred eighty-nine".