89829281 has 2 divisors, whose sum is σ = 89829282. Its totient is φ = 89829280.

The previous prime is 89829251. The next prime is 89829293. The reversal of 89829281 is 18292898.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88190881 + 1638400 = 9391^2 + 1280^2 .

It is a cyclic number.

It is not a de Polignac number, because 89829281 - 2²² = 85634977 is a prime.

It is a super-2 number, since 2×89829281² = 16138599449953922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89829221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44914640 + 44914641.

It is an arithmetic number, because the mean of its divisors is an integer number (44914641).

Almost surely, 2^89829281 is an apocalyptic number.

It is an amenable number.

89829281 is a deficient number, since it is larger than the sum of its proper divisors (1).

89829281 is an equidigital number, since it uses as much as digits as its factorization.

89829281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 47.

The square root of 89829281 is about 9477.8310282469. The cubic root of 89829281 is about 447.8569394003.

It can be divided in two parts, 8 and 9829281, that added together give a palindrome (9829289).

The spelling of 89829281 in words is "eighty-nine million, eight hundred twenty-nine thousand, two hundred eighty-one".