3309945 has 8 divisors (see below), whose sum is σ = 5295936. Its totient is φ = 1765296.

The previous prime is 3309923. The next prime is 3309961. The reversal of 3309945 is 5499033.

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

It is not a de Polignac number, because 3309945 - 2⁸ = 3309689 is a prime.

It is an Ulam number.

3309945 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110317 + ... + 110346.

It is an arithmetic number, because the mean of its divisors is an integer number (661992).

Almost surely, 2^3309945 is an apocalyptic number.

It is an amenable number.

3309945 is a deficient number, since it is larger than the sum of its proper divisors (1985991).

3309945 is a wasteful number, since it uses less digits than its factorization.

3309945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220671.

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 3309945 is about 1819.3254244362. The cubic root of 3309945 is about 149.0299625944.

The spelling of 3309945 in words is "three million, three hundred nine thousand, nine hundred forty-five".