3625989 has 4 divisors (see below), whose sum is σ = 4834656. Its totient is φ = 2417324.

The previous prime is 3625987. The next prime is 3625991. The reversal of 3625989 is 9895263.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (3625987) and next prime (3625991).

It is a cyclic number.

It is not a de Polignac number, because 3625989 - 2¹ = 3625987 is a prime.

It is a D-number.

3625989 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3625989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3625987) 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, 604329 + ... + 604334.

It is an arithmetic number, because the mean of its divisors is an integer number (1208664).

Almost surely, 2^3625989 is an apocalyptic number.

It is an amenable number.

3625989 is a deficient number, since it is larger than the sum of its proper divisors (1208667).

3625989 is a wasteful number, since it uses less digits than its factorization.

3625989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208666.

The product of its digits is 116640, while the sum is 42.

The square root of 3625989 is about 1904.2029828776. The cubic root of 3625989 is about 153.6298102271.

The spelling of 3625989 in words is "three million, six hundred twenty-five thousand, nine hundred eighty-nine".