88613209 has 2 divisors, whose sum is σ = 88613210. Its totient is φ = 88613208.

The previous prime is 88613171. The next prime is 88613219. The reversal of 88613209 is 90231688.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81956809 + 6656400 = 9053^2 + 2580^2 .

It is a cyclic number.

It is not a de Polignac number, because 88613209 - 2¹¹ = 88611161 is a prime.

It is not a weakly prime, because it can be changed into another prime (88613219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44306604 + 44306605.

It is an arithmetic number, because the mean of its divisors is an integer number (44306605).

Almost surely, 2^88613209 is an apocalyptic number.

It is an amenable number.

88613209 is a deficient number, since it is larger than the sum of its proper divisors (1).

88613209 is an equidigital number, since it uses as much as digits as its factorization.

88613209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 88613209 is about 9413.4589285767. The cubic root of 88613209 is about 445.8267825941.

The spelling of 88613209 in words is "eighty-eight million, six hundred thirteen thousand, two hundred nine".