240446989 has 2 divisors, whose sum is σ = 240446990. Its totient is φ = 240446988.

The previous prime is 240446981. The next prime is 240447043. The reversal of 240446989 is 989644042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183142089 + 57304900 = 13533^2 + 7570^2 .

It is a cyclic number.

It is not a de Polignac number, because 240446989 - 2³ = 240446981 is a prime.

It is a super-2 number, since 2×240446989² = 115629509038332242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240446981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120223494 + 120223495.

It is an arithmetic number, because the mean of its divisors is an integer number (120223495).

Almost surely, 2^240446989 is an apocalyptic number.

It is an amenable number.

240446989 is a deficient number, since it is larger than the sum of its proper divisors (1).

240446989 is an equidigital number, since it uses as much as digits as its factorization.

240446989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 240446989 is about 15506.3531818413. The cubic root of 240446989 is about 621.8320671320.

The spelling of 240446989 in words is "two hundred forty million, four hundred forty-six thousand, nine hundred eighty-nine".