23766139 has 2 divisors, whose sum is σ = 23766140. Its totient is φ = 23766138.

The previous prime is 23766133. The next prime is 23766163. The reversal of 23766139 is 93166732.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23766139 - 2⁷ = 23766011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23766098 and 23766107.

It is not a weakly prime, because it can be changed into another prime (23766133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11883069 + 11883070.

It is an arithmetic number, because the mean of its divisors is an integer number (11883070).

Almost surely, 2^23766139 is an apocalyptic number.

23766139 is a deficient number, since it is larger than the sum of its proper divisors (1).

23766139 is an equidigital number, since it uses as much as digits as its factorization.

23766139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 37.

The square root of 23766139 is about 4875.0527176637. The cubic root of 23766139 is about 287.5099489941.

It can be divided in two parts, 2376 and 6139, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 23766139 in words is "twenty-three million, seven hundred sixty-six thousand, one hundred thirty-nine".