33979947 has 8 divisors (see below), whose sum is σ = 47276544. Its totient is φ = 21668328.

The previous prime is 33979903. The next prime is 33979963. The reversal of 33979947 is 74997933.

33979947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 33979947 - 2⁸ = 33979691 is a prime.

It is a super-3 number, since 3×33979947³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33979947.

It is not an unprimeable number, because it can be changed into a prime (33979997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246163 + ... + 246300.

It is an arithmetic number, because the mean of its divisors is an integer number (5909568).

Almost surely, 2^33979947 is an apocalyptic number.

33979947 is a deficient number, since it is larger than the sum of its proper divisors (13296597).

33979947 is a wasteful number, since it uses less digits than its factorization.

33979947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492489.

The product of its digits is 1285956, while the sum is 51.

The square root of 33979947 is about 5829.2321106643. The cubic root of 33979947 is about 323.8974774695.

The spelling of 33979947 in words is "thirty-three million, nine hundred seventy-nine thousand, nine hundred forty-seven".