3801639 has 16 divisors (see below), whose sum is σ = 5389920. Its totient is φ = 2378880.

The previous prime is 3801631. The next prime is 3801661. The reversal of 3801639 is 9361083.

It is not a de Polignac number, because 3801639 - 2³ = 3801631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3801631) 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, 2629 + ... + 3809.

It is an arithmetic number, because the mean of its divisors is an integer number (336870).

Almost surely, 2^3801639 is an apocalyptic number.

3801639 is a deficient number, since it is larger than the sum of its proper divisors (1588281).

3801639 is a wasteful number, since it uses less digits than its factorization.

3801639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 3801639 is about 1949.7792182706. The cubic root of 3801639 is about 156.0715073226.

The spelling of 3801639 in words is "three million, eight hundred one thousand, six hundred thirty-nine".