33387889 has 2 divisors, whose sum is σ = 33387890. Its totient is φ = 33387888.

The previous prime is 33387877. The next prime is 33387901. The reversal of 33387889 is 98878333.

It is a balanced prime because it is at equal distance from previous prime (33387877) and next prime (33387901).

It can be written as a sum of positive squares in only one way, i.e., 33258289 + 129600 = 5767^2 + 360^2 .

It is an emirp because it is prime and its reverse (98878333) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33387889 - 2⁹ = 33387377 is a prime.

It is a super-2 number, since 2×33387889² = 2229502263752642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (33387689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16693944 + 16693945.

It is an arithmetic number, because the mean of its divisors is an integer number (16693945).

Almost surely, 2^33387889 is an apocalyptic number.

It is an amenable number.

33387889 is a deficient number, since it is larger than the sum of its proper divisors (1).

33387889 is an equidigital number, since it uses as much as digits as its factorization.

33387889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 49.

The square root of 33387889 is about 5778.2254196250. The cubic root of 33387889 is about 322.0052755588.

The spelling of 33387889 in words is "thirty-three million, three hundred eighty-seven thousand, eight hundred eighty-nine".