3639490 has 8 divisors (see below), whose sum is σ = 6551100. Its totient is φ = 1455792.

The previous prime is 3639487. The next prime is 3639499. The reversal of 3639490 is 949363.

It can be written as a sum of positive squares in 2 ways, for example, as 2968729 + 670761 = 1723^2 + 819^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (3639499) 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, 181965 + ... + 181984.

Almost surely, 2^3639490 is an apocalyptic number.

3639490 is a deficient number, since it is larger than the sum of its proper divisors (2911610).

3639490 is a wasteful number, since it uses less digits than its factorization.

3639490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363956.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 3639490 is about 1907.7447418352. The cubic root of 3639490 is about 153.8202490358.

The spelling of 3639490 in words is "three million, six hundred thirty-nine thousand, four hundred ninety".