23709493 has 2 divisors, whose sum is σ = 23709494. Its totient is φ = 23709492.

The previous prime is 23709463. The next prime is 23709523. The reversal of 23709493 is 39490732.

It is a balanced prime because it is at equal distance from previous prime (23709463) and next prime (23709523).

It can be written as a sum of positive squares in only one way, i.e., 16834609 + 6874884 = 4103^2 + 2622^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23709493 is a prime.

It is a super-3 number, since 3×23709493³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23709463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11854746 + 11854747.

It is an arithmetic number, because the mean of its divisors is an integer number (11854747).

Almost surely, 2^23709493 is an apocalyptic number.

It is an amenable number.

23709493 is a deficient number, since it is larger than the sum of its proper divisors (1).

23709493 is an equidigital number, since it uses as much as digits as its factorization.

23709493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 23709493 is about 4869.2394683359. The cubic root of 23709493 is about 287.2813430062.

The spelling of 23709493 in words is "twenty-three million, seven hundred nine thousand, four hundred ninety-three".