240980989 has 2 divisors, whose sum is σ = 240980990. Its totient is φ = 240980988.

The previous prime is 240980969. The next prime is 240981007. The reversal of 240980989 is 989089042.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166848889 + 74132100 = 12917^2 + 8610^2 .

It is a cyclic number.

It is not a de Polignac number, because 240980989 - 2¹⁹ = 240456701 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240980969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120490494 + 120490495.

It is an arithmetic number, because the mean of its divisors is an integer number (120490495).

Almost surely, 2^240980989 is an apocalyptic number.

It is an amenable number.

240980989 is a deficient number, since it is larger than the sum of its proper divisors (1).

240980989 is an equidigital number, since it uses as much as digits as its factorization.

240980989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 240980989 is about 15523.5623811031. The cubic root of 240980989 is about 622.2920615356.

The spelling of 240980989 in words is "two hundred forty million, nine hundred eighty thousand, nine hundred eighty-nine".