88242409 has 2 divisors, whose sum is σ = 88242410. Its totient is φ = 88242408.

The previous prime is 88242379. The next prime is 88242431. The reversal of 88242409 is 90424288.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85618009 + 2624400 = 9253^2 + 1620^2 .

It is a cyclic number.

It is not a de Polignac number, because 88242409 - 2⁷ = 88242281 is a prime.

It is a super-2 number, since 2×88242409² = 15573445492246562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (88242449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44121204 + 44121205.

It is an arithmetic number, because the mean of its divisors is an integer number (44121205).

Almost surely, 2^88242409 is an apocalyptic number.

It is an amenable number.

88242409 is a deficient number, since it is larger than the sum of its proper divisors (1).

88242409 is an equidigital number, since it uses as much as digits as its factorization.

88242409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 88242409 is about 9393.7430771764. The cubic root of 88242409 is about 445.2040624502.

The spelling of 88242409 in words is "eighty-eight million, two hundred forty-two thousand, four hundred nine".