88402289 has 2 divisors, whose sum is σ = 88402290. Its totient is φ = 88402288.

The previous prime is 88402283. The next prime is 88402333. The reversal of 88402289 is 98220488.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56851600 + 31550689 = 7540^2 + 5617^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88402289 is a prime.

It is a Chen prime.

It is equal to p_5129897 and since 88402289 and 5129897 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (88402283) 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, 44201144 + 44201145.

It is an arithmetic number, because the mean of its divisors is an integer number (44201145).

Almost surely, 2^88402289 is an apocalyptic number.

It is an amenable number.

88402289 is a deficient number, since it is larger than the sum of its proper divisors (1).

88402289 is an equidigital number, since it uses as much as digits as its factorization.

88402289 is an odious number, because the sum of its binary digits is odd.

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

The square root of 88402289 is about 9402.2491458161. The cubic root of 88402289 is about 445.4727778422.

The spelling of 88402289 in words is "eighty-eight million, four hundred two thousand, two hundred eighty-nine".