3639423 has 4 divisors (see below), whose sum is σ = 4852568. Its totient is φ = 2426280.

The previous prime is 3639421. The next prime is 3639473. The reversal of 3639423 is 3249363.

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

It is not a de Polignac number, because 3639423 - 2¹ = 3639421 is a prime.

It is a super-3 number, since 3×3639423³ (a number of 21 digits) contains 333 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3639421) 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, 606568 + ... + 606573.

It is an arithmetic number, because the mean of its divisors is an integer number (1213142).

Almost surely, 2^3639423 is an apocalyptic number.

3639423 is a deficient number, since it is larger than the sum of its proper divisors (1213145).

3639423 is a wasteful number, since it uses less digits than its factorization.

3639423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213144.

The product of its digits is 11664, while the sum is 30.

The square root of 3639423 is about 1907.7271817532. The cubic root of 3639423 is about 153.8193051288.

The spelling of 3639423 in words is "three million, six hundred thirty-nine thousand, four hundred twenty-three".