89991333 has 12 divisors (see below), whose sum is σ = 130223340. Its totient is φ = 59885376.

The previous prime is 89991329. The next prime is 89991337. The reversal of 89991333 is 33319998.

It is an interprime number because it is at equal distance from previous prime (89991329) and next prime (89991337).

It can be written as a sum of positive squares in 2 ways, for example, as 37675044 + 52316289 = 6138^2 + 7233^2 .

It is not a de Polignac number, because 89991333 - 2² = 89991329 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89991337) 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 in 11 ways as a sum of consecutive naturals, for example, 3666 + ... + 13907.

It is an arithmetic number, because the mean of its divisors is an integer number (10851945).

Almost surely, 2^89991333 is an apocalyptic number.

It is an amenable number.

89991333 is a deficient number, since it is larger than the sum of its proper divisors (40232007).

89991333 is a wasteful number, since it uses less digits than its factorization.

89991333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18148 (or 18145 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 89991333 is about 9486.3761784994. The cubic root of 89991333 is about 448.1260888847.

The spelling of 89991333 in words is "eighty-nine million, nine hundred ninety-one thousand, three hundred thirty-three".