33890669 has 2 divisors, whose sum is σ = 33890670. Its totient is φ = 33890668.

The previous prime is 33890629. The next prime is 33890693. The reversal of 33890669 is 96609833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31753225 + 2137444 = 5635^2 + 1462^2 .

It is a cyclic number.

It is not a de Polignac number, because 33890669 - 2⁸ = 33890413 is a prime.

It is a super-2 number, since 2×33890669² = 2297154890535122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33890629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16945334 + 16945335.

It is an arithmetic number, because the mean of its divisors is an integer number (16945335).

Almost surely, 2^33890669 is an apocalyptic number.

It is an amenable number.

33890669 is a deficient number, since it is larger than the sum of its proper divisors (1).

33890669 is an equidigital number, since it uses as much as digits as its factorization.

33890669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 33890669 is about 5821.5692901485. The cubic root of 33890669 is about 323.6135621630.

The spelling of 33890669 in words is "thirty-three million, eight hundred ninety thousand, six hundred sixty-nine".