23409977 has 2 divisors, whose sum is σ = 23409978. Its totient is φ = 23409976.

The previous prime is 23409973. The next prime is 23410019. The reversal of 23409977 is 77990432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15178816 + 8231161 = 3896^2 + 2869^2 .

It is a cyclic number.

It is not a de Polignac number, because 23409977 - 2² = 23409973 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23409973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11704988 + 11704989.

It is an arithmetic number, because the mean of its divisors is an integer number (11704989).

Almost surely, 2^23409977 is an apocalyptic number.

It is an amenable number.

23409977 is a deficient number, since it is larger than the sum of its proper divisors (1).

23409977 is an equidigital number, since it uses as much as digits as its factorization.

23409977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 23409977 is about 4838.3857845360. The cubic root of 23409977 is about 286.0664955333.

The spelling of 23409977 in words is "twenty-three million, four hundred nine thousand, nine hundred seventy-seven".