23406993 has 12 divisors (see below), whose sum is σ = 35589840. Its totient is φ = 14783256.

The previous prime is 23406991. The next prime is 23407001. The reversal of 23406993 is 39960432.

It is a happy number.

It is not a de Polignac number, because 23406993 - 2¹ = 23406991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23406991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68271 + ... + 68612.

It is an arithmetic number, because the mean of its divisors is an integer number (2965820).

Almost surely, 2^23406993 is an apocalyptic number.

It is an amenable number.

23406993 is a deficient number, since it is larger than the sum of its proper divisors (12182847).

23406993 is a wasteful number, since it uses less digits than its factorization.

23406993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136908 (or 136905 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 23406993 is about 4838.0774074006. The cubic root of 23406993 is about 286.0543403356.

The spelling of 23406993 in words is "twenty-three million, four hundred six thousand, nine hundred ninety-three".