3609440 has 48 divisors (see below), whose sum is σ = 9035712. Its totient is φ = 1357824.

The previous prime is 3609439. The next prime is 3609451. The reversal of 3609440 is 449063.

It is a super-2 number, since 2×3609440² = 26056114227200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2057 + ... + 3383.

It is an arithmetic number, because the mean of its divisors is an integer number (188244).

Almost surely, 2^3609440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3609440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4517856).

3609440 is an abundant number, since it is smaller than the sum of its proper divisors (5426272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3609440 is a wasteful number, since it uses less digits than its factorization.

3609440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359 (or 1351 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 3609440 is about 1899.8526258634. The cubic root of 3609440 is about 153.3957317976.

The spelling of 3609440 in words is "three million, six hundred nine thousand, four hundred forty".