23289887 has 2 divisors, whose sum is σ = 23289888. Its totient is φ = 23289886.

The previous prime is 23289859. The next prime is 23289907. The reversal of 23289887 is 78898232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23289887 - 2¹⁶ = 23224351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23229887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11644943 + 11644944.

It is an arithmetic number, because the mean of its divisors is an integer number (11644944).

Almost surely, 2^23289887 is an apocalyptic number.

23289887 is a deficient number, since it is larger than the sum of its proper divisors (1).

23289887 is an equidigital number, since it uses as much as digits as its factorization.

23289887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 47.

The square root of 23289887 is about 4825.9596973037. The cubic root of 23289887 is about 285.5764959525.

The spelling of 23289887 in words is "twenty-three million, two hundred eighty-nine thousand, eight hundred eighty-seven".