24666989 has 2 divisors, whose sum is σ = 24666990. Its totient is φ = 24666988.

The previous prime is 24666977. The next prime is 24667061. The reversal of 24666989 is 98966642.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12709225 + 11957764 = 3565^2 + 3458^2 .

It is a cyclic number.

It is not a de Polignac number, because 24666989 - 2¹⁶ = 24601453 is a prime.

It is a super-2 number, since 2×24666989² = 1216920692652242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24666289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12333494 + 12333495.

It is an arithmetic number, because the mean of its divisors is an integer number (12333495).

Almost surely, 2^24666989 is an apocalyptic number.

It is an amenable number.

24666989 is a deficient number, since it is larger than the sum of its proper divisors (1).

24666989 is an equidigital number, since it uses as much as digits as its factorization.

24666989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 50.

The square root of 24666989 is about 4966.5872588730. The cubic root of 24666989 is about 291.0976593449.

The spelling of 24666989 in words is "twenty-four million, six hundred sixty-six thousand, nine hundred eighty-nine".