40968089 has 2 divisors, whose sum is σ = 40968090. Its totient is φ = 40968088.

The previous prime is 40968077. The next prime is 40968091. The reversal of 40968089 is 98086904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39790864 + 1177225 = 6308^2 + 1085^2 .

It is a cyclic number.

It is not a de Polignac number, because 40968089 - 2⁴ = 40968073 is a prime.

Together with 40968091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40968049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20484044 + 20484045.

It is an arithmetic number, because the mean of its divisors is an integer number (20484045).

Almost surely, 2^40968089 is an apocalyptic number.

It is an amenable number.

40968089 is a deficient number, since it is larger than the sum of its proper divisors (1).

40968089 is an equidigital number, since it uses as much as digits as its factorization.

40968089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 40968089 is about 6400.6319219277. The cubic root of 40968089 is about 344.7322406071.

The spelling of 40968089 in words is "forty million, nine hundred sixty-eight thousand, eighty-nine".