33494947 has 4 divisors (see below), whose sum is σ = 35465256. Its totient is φ = 31524640.

The previous prime is 33494927. The next prime is 33494963. The reversal of 33494947 is 74949433.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33494947 - 2⁷ = 33494819 is a prime.

It is a super-2 number, since 2×33494947² = 2243822949065618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33494927) 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 in 3 ways as a sum of consecutive naturals, for example, 985129 + ... + 985162.

It is an arithmetic number, because the mean of its divisors is an integer number (8866314).

Almost surely, 2^33494947 is an apocalyptic number.

33494947 is a deficient number, since it is larger than the sum of its proper divisors (1970309).

33494947 is a wasteful number, since it uses less digits than its factorization.

33494947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970308.

The product of its digits is 326592, while the sum is 43.

The square root of 33494947 is about 5787.4819222180. The cubic root of 33494947 is about 322.3490774708.

The spelling of 33494947 in words is "thirty-three million, four hundred ninety-four thousand, nine hundred forty-seven".