23199389 has 2 divisors, whose sum is σ = 23199390. Its totient is φ = 23199388.

The previous prime is 23199347. The next prime is 23199401. The reversal of 23199389 is 98399132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21548164 + 1651225 = 4642^2 + 1285^2 .

It is a cyclic number.

It is not a de Polignac number, because 23199389 - 2¹⁶ = 23133853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23199089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11599694 + 11599695.

It is an arithmetic number, because the mean of its divisors is an integer number (11599695).

Almost surely, 2^23199389 is an apocalyptic number.

It is an amenable number.

23199389 is a deficient number, since it is larger than the sum of its proper divisors (1).

23199389 is an equidigital number, since it uses as much as digits as its factorization.

23199389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 44.

The square root of 23199389 is about 4816.5744051141. The cubic root of 23199389 is about 285.2061256353.

The spelling of 23199389 in words is "twenty-three million, one hundred ninety-nine thousand, three hundred eighty-nine".