88973009 has 2 divisors, whose sum is σ = 88973010. Its totient is φ = 88973008.

The previous prime is 88972981. The next prime is 88973041. The reversal of 88973009 is 90037988.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60403984 + 28569025 = 7772^2 + 5345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88973009 is a prime.

It is not a weakly prime, because it can be changed into another prime (88973089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44486504 + 44486505.

It is an arithmetic number, because the mean of its divisors is an integer number (44486505).

Almost surely, 2^88973009 is an apocalyptic number.

It is an amenable number.

88973009 is a deficient number, since it is larger than the sum of its proper divisors (1).

88973009 is an equidigital number, since it uses as much as digits as its factorization.

88973009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 88973009 is about 9432.5505034429. The cubic root of 88973009 is about 446.4293709371.

The spelling of 88973009 in words is "eighty-eight million, nine hundred seventy-three thousand, nine".