3509489 has 4 divisors (see below), whose sum is σ = 3551856. Its totient is φ = 3467124.

The previous prime is 3509461. The next prime is 3509491. The reversal of 3509489 is 9849053.

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: 9849053 = 353 ⋅27901.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3509489 is a prime.

It is a super-2 number, since 2×3509489² = 24633026082242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3509419) 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, 21059 + ... + 21224.

It is an arithmetic number, because the mean of its divisors is an integer number (887964).

Almost surely, 2^3509489 is an apocalyptic number.

It is an amenable number.

3509489 is a deficient number, since it is larger than the sum of its proper divisors (42367).

3509489 is an equidigital number, since it uses as much as digits as its factorization.

3509489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42366.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 3509489 is about 1873.3630187446. The cubic root of 3509489 is about 151.9665352229.

The spelling of 3509489 in words is "three million, five hundred nine thousand, four hundred eighty-nine".