23387449 has 2 divisors, whose sum is σ = 23387450. Its totient is φ = 23387448.

The previous prime is 23387447. The next prime is 23387501. The reversal of 23387449 is 94478332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21715600 + 1671849 = 4660^2 + 1293^2 .

It is a cyclic number.

It is not a de Polignac number, because 23387449 - 2¹ = 23387447 is a prime.

It is a super-3 number, since 3×23387449³ (a number of 23 digits) contains 333 as substring.

Together with 23387447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23387443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11693724 + 11693725.

It is an arithmetic number, because the mean of its divisors is an integer number (11693725).

Almost surely, 2^23387449 is an apocalyptic number.

It is an amenable number.

23387449 is a deficient number, since it is larger than the sum of its proper divisors (1).

23387449 is an equidigital number, since it uses as much as digits as its factorization.

23387449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 23387449 is about 4836.0571750135. The cubic root of 23387449 is about 285.9747031271.

The spelling of 23387449 in words is "twenty-three million, three hundred eighty-seven thousand, four hundred forty-nine".