23809961 has 16 divisors (see below), whose sum is σ = 27869184. Its totient is φ = 19922064.

The previous prime is 23809949. The next prime is 23809963. The reversal of 23809961 is 16990832.

It is a cyclic number.

It is not a de Polignac number, because 23809961 - 2¹⁰ = 23808937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23809963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61976 + ... + 62358.

It is an arithmetic number, because the mean of its divisors is an integer number (1741824).

Almost surely, 2^23809961 is an apocalyptic number.

It is an amenable number.

23809961 is a deficient number, since it is larger than the sum of its proper divisors (4059223).

23809961 is a wasteful number, since it uses less digits than its factorization.

23809961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 23809961 is about 4879.5451632299. The cubic root of 23809961 is about 287.6865521443.

The spelling of 23809961 in words is "twenty-three million, eight hundred nine thousand, nine hundred sixty-one".