23897947 has 2 divisors, whose sum is σ = 23897948. Its totient is φ = 23897946.

The previous prime is 23897927. The next prime is 23897963. The reversal of 23897947 is 74979832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23897947 - 2¹¹ = 23895899 is a prime.

It is a super-2 number, since 2×23897947² = 1142223741629618, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23897947.

It is not a weakly prime, because it can be changed into another prime (23897917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11948973 + 11948974.

It is an arithmetic number, because the mean of its divisors is an integer number (11948974).

Almost surely, 2^23897947 is an apocalyptic number.

23897947 is a deficient number, since it is larger than the sum of its proper divisors (1).

23897947 is an equidigital number, since it uses as much as digits as its factorization.

23897947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 49.

The square root of 23897947 is about 4888.5526487908. The cubic root of 23897947 is about 288.0404834744.

The spelling of 23897947 in words is "twenty-three million, eight hundred ninety-seven thousand, nine hundred forty-seven".