24839965 has 4 divisors (see below), whose sum is σ = 29807964. Its totient is φ = 19871968.

The previous prime is 24839963. The next prime is 24839981. The reversal of 24839965 is 56993842.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56993842 = 2 ⋅28496921.

It can be written as a sum of positive squares in 2 ways, for example, as 19027044 + 5812921 = 4362^2 + 2411^2 .

It is a cyclic number.

It is not a de Polignac number, because 24839965 - 2¹ = 24839963 is a prime.

It is a super-2 number, since 2×24839965² = 1234047722402450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24839963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2483992 + ... + 2484001.

It is an arithmetic number, because the mean of its divisors is an integer number (7451991).

Almost surely, 2^24839965 is an apocalyptic number.

It is an amenable number.

24839965 is a deficient number, since it is larger than the sum of its proper divisors (4967999).

24839965 is an equidigital number, since it uses as much as digits as its factorization.

24839965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4967998.

The product of its digits is 466560, while the sum is 46.

The square root of 24839965 is about 4983.9708064956. The cubic root of 24839965 is about 291.7765108261.

The spelling of 24839965 in words is "twenty-four million, eight hundred thirty-nine thousand, nine hundred sixty-five".