23763989 has 2 divisors, whose sum is σ = 23763990. Its totient is φ = 23763988.

The previous prime is 23763973. The next prime is 23763997. The reversal of 23763989 is 98936732.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23716900 + 47089 = 4870^2 + 217^2 .

It is a cyclic number.

It is not a de Polignac number, because 23763989 - 2⁴ = 23763973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23763919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11881994 + 11881995.

It is an arithmetic number, because the mean of its divisors is an integer number (11881995).

Almost surely, 2^23763989 is an apocalyptic number.

It is an amenable number.

23763989 is a deficient number, since it is larger than the sum of its proper divisors (1).

23763989 is an equidigital number, since it uses as much as digits as its factorization.

23763989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 47.

The square root of 23763989 is about 4874.8322022404. The cubic root of 23763989 is about 287.5012788853.

The spelling of 23763989 in words is "twenty-three million, seven hundred sixty-three thousand, nine hundred eighty-nine".