24989971 has 2 divisors, whose sum is σ = 24989972. Its totient is φ = 24989970.

The previous prime is 24989969. The next prime is 24990037. The reversal of 24989971 is 17998942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 24989971 - 2¹ = 24989969 is a prime.

Together with 24989969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (24980971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12494985 + 12494986.

It is an arithmetic number, because the mean of its divisors is an integer number (12494986).

Almost surely, 2^24989971 is an apocalyptic number.

24989971 is a deficient number, since it is larger than the sum of its proper divisors (1).

24989971 is an equidigital number, since it uses as much as digits as its factorization.

24989971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 49.

The square root of 24989971 is about 4998.9969993990. The cubic root of 24989971 is about 292.3626686265.

The spelling of 24989971 in words is "twenty-four million, nine hundred eighty-nine thousand, nine hundred seventy-one".