3493639 has 4 divisors (see below), whose sum is σ = 3520440. Its totient is φ = 3466840.

The previous prime is 3493597. The next prime is 3493661. The reversal of 3493639 is 9363943.

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 3493639 - 2²¹ = 1396487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3493598 and 3493607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3493939) 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, 13204 + ... + 13465.

It is an arithmetic number, because the mean of its divisors is an integer number (880110).

Almost surely, 2^3493639 is an apocalyptic number.

3493639 is a deficient number, since it is larger than the sum of its proper divisors (26801).

3493639 is a wasteful number, since it uses less digits than its factorization.

3493639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26800.

The product of its digits is 52488, while the sum is 37.

The square root of 3493639 is about 1869.1278714952. The cubic root of 3493639 is about 151.7374130893.

The spelling of 3493639 in words is "three million, four hundred ninety-three thousand, six hundred thirty-nine".