3909287 has 8 divisors (see below), whose sum is σ = 4220640. Its totient is φ = 3609760.

The previous prime is 3909277. The next prime is 3909289. The reversal of 3909287 is 7829093.

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

It is a cyclic number.

It is not a de Polignac number, because 3909287 - 2⁴ = 3909271 is a prime.

It is a super-5 number, since 5×3909287⁵ (a number of 34 digits) contains 55555 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3909287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3909289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2264 + ... + 3597.

It is an arithmetic number, because the mean of its divisors is an integer number (527580).

Almost surely, 2^3909287 is an apocalyptic number.

3909287 is a deficient number, since it is larger than the sum of its proper divisors (311353).

3909287 is a wasteful number, since it uses less digits than its factorization.

3909287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5913.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 3909287 is about 1977.1916953093. The cubic root of 3909287 is about 157.5309353864.

The spelling of 3909287 in words is "three million, nine hundred nine thousand, two hundred eighty-seven".