23499999 has 6 divisors (see below), whose sum is σ = 33944456. Its totient is φ = 15666660.

The previous prime is 23499989. The next prime is 23500003. The reversal of 23499999 is 99999432.

It is not a de Polignac number, because 23499999 - 2⁸ = 23499743 is a prime.

It is a Duffinian number.

23499999 is a modest number, since divided by 9999 gives 2349 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23499919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1305547 + ... + 1305564.

Almost surely, 2^23499999 is an apocalyptic number.

23499999 is a deficient number, since it is larger than the sum of its proper divisors (10444457).

23499999 is a wasteful number, since it uses less digits than its factorization.

23499999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611117 (or 2611114 counting only the distinct ones).

The product of its digits is 1417176, while the sum is 54.

The square root of 23499999 is about 4847.6797542742. The cubic root of 23499999 is about 286.4327117362.

The spelling of 23499999 in words is "twenty-three million, four hundred ninety-nine thousand, nine hundred ninety-nine".