3489621 has 4 divisors (see below), whose sum is σ = 4652832. Its totient is φ = 2326412.

The previous prime is 3489617. The next prime is 3489649. The reversal of 3489621 is 1269843.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1269843 = 3 ⋅423281.

It is a cyclic number.

It is not a de Polignac number, because 3489621 - 2² = 3489617 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3489691) 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, 581601 + ... + 581606.

It is an arithmetic number, because the mean of its divisors is an integer number (1163208).

Almost surely, 2^3489621 is an apocalyptic number.

It is an amenable number.

3489621 is a deficient number, since it is larger than the sum of its proper divisors (1163211).

3489621 is a wasteful number, since it uses less digits than its factorization.

3489621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163210.

The product of its digits is 10368, while the sum is 33.

The square root of 3489621 is about 1868.0527294485. The cubic root of 3489621 is about 151.6792202036.

The spelling of 3489621 in words is "three million, four hundred eighty-nine thousand, six hundred twenty-one".