23249999 has 4 divisors (see below), whose sum is σ = 24617664. Its totient is φ = 21882336.

The previous prime is 23249983. The next prime is 23250001. The reversal of 23249999 is 99994232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23249999 - 2⁴ = 23249983 is a prime.

It is a Duffinian number.

23249999 is a modest number, since divided by 9999 gives 2324 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23249099) 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, 683807 + ... + 683840.

It is an arithmetic number, because the mean of its divisors is an integer number (6154416).

Almost surely, 2^23249999 is an apocalyptic number.

23249999 is a deficient number, since it is larger than the sum of its proper divisors (1367665).

23249999 is a wasteful number, since it uses less digits than its factorization.

23249999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367664.

The product of its digits is 314928, while the sum is 47.

The square root of 23249999 is about 4821.8252768013. The cubic root of 23249999 is about 285.4133695773.

The spelling of 23249999 in words is "twenty-three million, two hundred forty-nine thousand, nine hundred ninety-nine".