23379991 has 2 divisors, whose sum is σ = 23379992. Its totient is φ = 23379990.

The previous prime is 23379973. The next prime is 23379997. The reversal of 23379991 is 19997332.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23379991 - 2⁵ = 23379959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23379997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11689995 + 11689996.

It is an arithmetic number, because the mean of its divisors is an integer number (11689996).

Almost surely, 2^23379991 is an apocalyptic number.

23379991 is a deficient number, since it is larger than the sum of its proper divisors (1).

23379991 is an equidigital number, since it uses as much as digits as its factorization.

23379991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91854, while the sum is 43.

The square root of 23379991 is about 4835.2860308362. The cubic root of 23379991 is about 285.9443018339.

The spelling of 23379991 in words is "twenty-three million, three hundred seventy-nine thousand, nine hundred ninety-one".