23842993 has 4 divisors (see below), whose sum is σ = 25245540. Its totient is φ = 22440448.

The previous prime is 23842991. The next prime is 23842997. The reversal of 23842993 is 39924832.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20720704 + 3122289 = 4552^2 + 1767^2 .

It is a cyclic number.

It is not a de Polignac number, because 23842993 - 2¹ = 23842991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23842991) 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 in 3 ways as a sum of consecutive naturals, for example, 701248 + ... + 701281.

It is an arithmetic number, because the mean of its divisors is an integer number (6311385).

Almost surely, 2^23842993 is an apocalyptic number.

It is an amenable number.

23842993 is a deficient number, since it is larger than the sum of its proper divisors (1402547).

23842993 is a wasteful number, since it uses less digits than its factorization.

23842993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402546.

The product of its digits is 93312, while the sum is 40.

The square root of 23842993 is about 4882.9287318166. The cubic root of 23842993 is about 287.8195282977.

The spelling of 23842993 in words is "twenty-three million, eight hundred forty-two thousand, nine hundred ninety-three".