33869947 has 2 divisors, whose sum is σ = 33869948. Its totient is φ = 33869946.

The previous prime is 33869881. The next prime is 33869959. The reversal of 33869947 is 74996833.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 33869947 - 2⁷ = 33869819 is a prime.

It is a super-2 number, since 2×33869947² = 2294346619565618, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33869947.

It is not a weakly prime, because it can be changed into another prime (33869047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16934973 + 16934974.

It is an arithmetic number, because the mean of its divisors is an integer number (16934974).

Almost surely, 2^33869947 is an apocalyptic number.

33869947 is a deficient number, since it is larger than the sum of its proper divisors (1).

33869947 is an equidigital number, since it uses as much as digits as its factorization.

33869947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 49.

The square root of 33869947 is about 5819.7892573529. The cubic root of 33869947 is about 323.5475923091.

The spelling of 33869947 in words is "thirty-three million, eight hundred sixty-nine thousand, nine hundred forty-seven".