3901647 has 8 divisors (see below), whose sum is σ = 5212080. Its totient is φ = 2596160.

The previous prime is 3901609. The next prime is 3901649. The reversal of 3901647 is 7461093.

It is a happy number.

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 3901647 - 2¹⁰ = 3900623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3901649) 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, 1429 + ... + 3137.

It is an arithmetic number, because the mean of its divisors is an integer number (651510).

Almost surely, 2^3901647 is an apocalyptic number.

3901647 is a deficient number, since it is larger than the sum of its proper divisors (1310433).

3901647 is a wasteful number, since it uses less digits than its factorization.

3901647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 3901647 is about 1975.2587172317. The cubic root of 3901647 is about 157.4282464792.

The spelling of 3901647 in words is "three million, nine hundred one thousand, six hundred forty-seven".