23897977 has 2 divisors, whose sum is σ = 23897978. Its totient is φ = 23897976.

The previous prime is 23897963. The next prime is 23897983. The reversal of 23897977 is 77979832.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23853456 + 44521 = 4884^2 + 211^2 .

It is a cyclic number.

It is not a de Polignac number, because 23897977 - 2¹¹ = 23895929 is a prime.

It is a super-2 number, since 2×23897977² = 1142226609385058, which contains 22 as substring.

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, 11948988 + 11948989.

It is an arithmetic number, because the mean of its divisors is an integer number (11948989).

Almost surely, 2^23897977 is an apocalyptic number.

It is an amenable number.

23897977 is a deficient number, since it is larger than the sum of its proper divisors (1).

23897977 is an equidigital number, since it uses as much as digits as its factorization.

23897977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 52.

The square root of 23897977 is about 4888.5557171827. Note that the first 3 decimals coincide. The cubic root of 23897977 is about 288.0406040038.

The spelling of 23897977 in words is "twenty-three million, eight hundred ninety-seven thousand, nine hundred seventy-seven".