3309470785 has 16 divisors (see below), whose sum is σ = 4091789520. Its totient is φ = 2568417280.

The previous prime is 3309470743. The next prime is 3309470833. The reversal of 3309470785 is 5870749033.

It is a happy number.

It is a Cunningham number, because it is equal to 57528²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1 + 3309470784 = 1^2 + 57528^2 .

It is not a de Polignac number, because 3309470785 - 2⁹ = 3309470273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46576 + ... + 93745.

It is an arithmetic number, because the mean of its divisors is an integer number (255736845).

Almost surely, 2^3309470785 is an apocalyptic number.

It is an amenable number.

3309470785 is a deficient number, since it is larger than the sum of its proper divisors (782318735).

3309470785 is a wasteful number, since it uses less digits than its factorization.

3309470785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140468.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 3309470785 is about 57528.0000086914. Note that the first 5 decimals coincide. The cubic root of 3309470785 is about 1490.2284509256.

The spelling of 3309470785 in words is "three billion, three hundred nine million, four hundred seventy thousand, seven hundred eighty-five".