3789639 has 16 divisors (see below), whose sum is σ = 6416640. Its totient is φ = 2165400.

The previous prime is 3789613. The next prime is 3789701. The reversal of 3789639 is 9369873.

It is a happy number.

3789639 is a `hidden beast` number, since 3 + 7 + 8 + 9 + 639 = 666.

It is not a de Polignac number, because 3789639 - 2⁹ = 3789127 is a prime.

It is a super-2 number, since 2×3789639² = 28722727500642, which contains 22 as substring.

3789639 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3789594 and 3789603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3789139) 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 15 ways as a sum of consecutive naturals, for example, 9837 + ... + 10214.

It is an arithmetic number, because the mean of its divisors is an integer number (401040).

Almost surely, 2^3789639 is an apocalyptic number.

3789639 is a deficient number, since it is larger than the sum of its proper divisors (2627001).

3789639 is a wasteful number, since it uses less digits than its factorization.

3789639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20067 (or 20061 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 3789639 is about 1946.6995145630. The cubic root of 3789639 is about 155.9071192670.

It can be divided in two parts, 37 and 89639, that added together give a triangular number (89676 = T₄₂₃).

The spelling of 3789639 in words is "three million, seven hundred eighty-nine thousand, six hundred thirty-nine".