23398993 has 2 divisors, whose sum is σ = 23398994. Its totient is φ = 23398992.

The previous prime is 23398979. The next prime is 23399003. The reversal of 23398993 is 39989332.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17581249 + 5817744 = 4193^2 + 2412^2 .

It is a cyclic number.

It is not a de Polignac number, because 23398993 - 2⁵ = 23398961 is a prime.

It is not a weakly prime, because it can be changed into another prime (23398913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11699496 + 11699497.

It is an arithmetic number, because the mean of its divisors is an integer number (11699497).

Almost surely, 2^23398993 is an apocalyptic number.

It is an amenable number.

23398993 is a deficient number, since it is larger than the sum of its proper divisors (1).

23398993 is an equidigital number, since it uses as much as digits as its factorization.

23398993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 46.

The square root of 23398993 is about 4837.2505620445. The cubic root of 23398993 is about 286.0217475761.

The spelling of 23398993 in words is "twenty-three million, three hundred ninety-eight thousand, nine hundred ninety-three".