3739639 has 4 divisors (see below), whose sum is σ = 3902256. Its totient is φ = 3577024.

The previous prime is 3739613. The next prime is 3739661. The reversal of 3739639 is 9369373.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3739639 - 2⁷ = 3739511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3739669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81274 + ... + 81319.

It is an arithmetic number, because the mean of its divisors is an integer number (975564).

Almost surely, 2^3739639 is an apocalyptic number.

3739639 is a deficient number, since it is larger than the sum of its proper divisors (162617).

3739639 is a wasteful number, since it uses less digits than its factorization.

3739639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162616.

The product of its digits is 91854, while the sum is 40.

The square root of 3739639 is about 1933.8146240010. The cubic root of 3739639 is about 155.2184087129.

The spelling of 3739639 in words is "three million, seven hundred thirty-nine thousand, six hundred thirty-nine".