88228409 has 2 divisors, whose sum is σ = 88228410. Its totient is φ = 88228408.

The previous prime is 88228403. The next prime is 88228417. The reversal of 88228409 is 90482288.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80048809 + 8179600 = 8947^2 + 2860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88228409 is a prime.

It is not a weakly prime, because it can be changed into another prime (88228403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44114204 + 44114205.

It is an arithmetic number, because the mean of its divisors is an integer number (44114205).

Almost surely, 2^88228409 is an apocalyptic number.

It is an amenable number.

88228409 is a deficient number, since it is larger than the sum of its proper divisors (1).

88228409 is an equidigital number, since it uses as much as digits as its factorization.

88228409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 88228409 is about 9392.9978707546. The cubic root of 88228409 is about 445.1805167553.

The spelling of 88228409 in words is "eighty-eight million, two hundred twenty-eight thousand, four hundred nine".