33379889 has 2 divisors, whose sum is σ = 33379890. Its totient is φ = 33379888.

The previous prime is 33379859. The next prime is 33379897. The reversal of 33379889 is 98897333.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18879025 + 14500864 = 4345^2 + 3808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33379889 is a prime.

It is a super-2 number, since 2×33379889² = 2228433979304642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33379849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16689944 + 16689945.

It is an arithmetic number, because the mean of its divisors is an integer number (16689945).

Almost surely, 2^33379889 is an apocalyptic number.

It is an amenable number.

33379889 is a deficient number, since it is larger than the sum of its proper divisors (1).

33379889 is an equidigital number, since it uses as much as digits as its factorization.

33379889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 50.

The square root of 33379889 is about 5777.5331240937. The cubic root of 33379889 is about 321.9795551748.

The spelling of 33379889 in words is "thirty-three million, three hundred seventy-nine thousand, eight hundred eighty-nine".