23405393 has 6 divisors (see below), whose sum is σ = 25726722. Its totient is φ = 21277520.

The previous prime is 23405387. The next prime is 23405401. The reversal of 23405393 is 39350432.

It can be written as a sum of positive squares in only one way, i.e., 13017664 + 10387729 = 3608^2 + 3223^2 .

It is not a de Polignac number, because 23405393 - 2¹² = 23401297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23405293) 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 5 ways as a sum of consecutive naturals, for example, 96596 + ... + 96837.

It is an arithmetic number, because the mean of its divisors is an integer number (4287787).

Almost surely, 2^23405393 is an apocalyptic number.

It is an amenable number.

23405393 is a deficient number, since it is larger than the sum of its proper divisors (2321329).

23405393 is a wasteful number, since it uses less digits than its factorization.

23405393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193455 (or 193444 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 23405393 is about 4837.9120496346. The cubic root of 23405393 is about 286.0478223779.

The spelling of 23405393 in words is "twenty-three million, four hundred five thousand, three hundred ninety-three".