23487869 has 2 divisors, whose sum is σ = 23487870. Its totient is φ = 23487868.

The previous prime is 23487809. The next prime is 23487923. The reversal of 23487869 is 96878432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19035769 + 4452100 = 4363^2 + 2110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23487869 is a prime.

It is a super-2 number, since 2×23487869² = 1103359980322322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23487809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11743934 + 11743935.

It is an arithmetic number, because the mean of its divisors is an integer number (11743935).

Almost surely, 2^23487869 is an apocalyptic number.

It is an amenable number.

23487869 is a deficient number, since it is larger than the sum of its proper divisors (1).

23487869 is an equidigital number, since it uses as much as digits as its factorization.

23487869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 47.

The square root of 23487869 is about 4846.4284787872. The cubic root of 23487869 is about 286.3834205744.

The spelling of 23487869 in words is "twenty-three million, four hundred eighty-seven thousand, eight hundred sixty-nine".