88691443 has 2 divisors, whose sum is σ = 88691444. Its totient is φ = 88691442.

The previous prime is 88691441. The next prime is 88691459. The reversal of 88691443 is 34419688.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 88691443 - 2¹ = 88691441 is a prime.

It is a super-2 number, since 2×88691443² = 15732344122844498, which contains 22 as substring.

Together with 88691441, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 88691443.

It is not a weakly prime, because it can be changed into another prime (88691441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44345721 + 44345722.

It is an arithmetic number, because the mean of its divisors is an integer number (44345722).

Almost surely, 2^88691443 is an apocalyptic number.

88691443 is a deficient number, since it is larger than the sum of its proper divisors (1).

88691443 is an equidigital number, since it uses as much as digits as its factorization.

88691443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 43.

The square root of 88691443 is about 9417.6134450295. The cubic root of 88691443 is about 445.9579464595.

It can be divided in two parts, 886 and 91443, that added together give a palindrome (92329).

The spelling of 88691443 in words is "eighty-eight million, six hundred ninety-one thousand, four hundred forty-three".