24299981 has 2 divisors, whose sum is σ = 24299982. Its totient is φ = 24299980.

The previous prime is 24299969. The next prime is 24300007. The reversal of 24299981 is 18999242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14478025 + 9821956 = 3805^2 + 3134^2 .

It is a cyclic number.

It is not a de Polignac number, because 24299981 - 2²² = 20105677 is a prime.

It is a super-2 number, since 2×24299981² = 1180978153200722, 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 (24299911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12149990 + 12149991.

It is an arithmetic number, because the mean of its divisors is an integer number (12149991).

Almost surely, 2^24299981 is an apocalyptic number.

It is an amenable number.

24299981 is a deficient number, since it is larger than the sum of its proper divisors (1).

24299981 is an equidigital number, since it uses as much as digits as its factorization.

24299981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 44.

The square root of 24299981 is about 4929.5010903742. The cubic root of 24299981 is about 289.6467398907.

The spelling of 24299981 in words is "twenty-four million, two hundred ninety-nine thousand, nine hundred eighty-one".