23929291 has 2 divisors, whose sum is σ = 23929292. Its totient is φ = 23929290.

The previous prime is 23929289. The next prime is 23929313. The reversal of 23929291 is 19292932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23929291 - 2¹ = 23929289 is a prime.

It is a super-2 number, since 2×23929291² = 1145221935525362, which contains 22 as substring.

Together with 23929289, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 23929291.

It is not a weakly prime, because it can be changed into another prime (23929231) 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, 11964645 + 11964646.

It is an arithmetic number, because the mean of its divisors is an integer number (11964646).

Almost surely, 2^23929291 is an apocalyptic number.

23929291 is a deficient number, since it is larger than the sum of its proper divisors (1).

23929291 is an equidigital number, since it uses as much as digits as its factorization.

23929291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 37.

The square root of 23929291 is about 4891.7574551484. The cubic root of 23929291 is about 288.1663575599.

It can be divided in two parts, 2 and 3929291, that added together give a palindrome (3929293).

The spelling of 23929291 in words is "twenty-three million, nine hundred twenty-nine thousand, two hundred ninety-one".