3941509 has 16 divisors (see below), whose sum is σ = 4745664. Its totient is φ = 3225600.

The previous prime is 3941507. The next prime is 3941537. The reversal of 3941509 is 9051493.

It is a cyclic number.

It is not a de Polignac number, because 3941509 - 2¹ = 3941507 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3941507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5829 + ... + 6469.

It is an arithmetic number, because the mean of its divisors is an integer number (296604).

Almost surely, 2^3941509 is an apocalyptic number.

It is an amenable number.

3941509 is a deficient number, since it is larger than the sum of its proper divisors (804155).

3941509 is a wasteful number, since it uses less digits than its factorization.

3941509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 3941509 is about 1985.3233993483. The cubic root of 3941509 is about 157.9625639021.

The spelling of 3941509 in words is "three million, nine hundred forty-one thousand, five hundred nine".