3629639 has 4 divisors (see below), whose sum is σ = 3908856. Its totient is φ = 3350424.

The previous prime is 3629629. The next prime is 3629657. The reversal of 3629639 is 9369263.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9369263 = 967 ⋅9689.

It is a cyclic number.

It is not a de Polignac number, because 3629639 - 2⁴ = 3629623 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 (3629609) 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, 139589 + ... + 139614.

It is an arithmetic number, because the mean of its divisors is an integer number (977214).

Almost surely, 2^3629639 is an apocalyptic number.

3629639 is a deficient number, since it is larger than the sum of its proper divisors (279217).

3629639 is a wasteful number, since it uses less digits than its factorization.

3629639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279216.

The product of its digits is 52488, while the sum is 38.

The square root of 3629639 is about 1905.1611480397. The cubic root of 3629639 is about 153.6813419846.

It can be divided in two parts, 362 and 9639, that added together give a palindrome (10001).

The spelling of 3629639 in words is "three million, six hundred twenty-nine thousand, six hundred thirty-nine".