3439640 has 16 divisors (see below), whose sum is σ = 7739280. Its totient is φ = 1375840.

The previous prime is 3439637. The next prime is 3439643. The reversal of 3439640 is 469343.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3439637) and next prime (3439643).

It is a super-2 number, since 2×3439640² = 23662246659200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3439643) 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, 42956 + ... + 43035.

It is an arithmetic number, because the mean of its divisors is an integer number (483705).

Almost surely, 2^3439640 is an apocalyptic number.

It is an amenable number.

3439640 is an abundant number, since it is smaller than the sum of its proper divisors (4299640).

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

3439640 is a wasteful number, since it uses less digits than its factorization.

3439640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86002 (or 85998 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 3439640 is about 1854.6266470640. The cubic root of 3439640 is about 150.9515801655.

The spelling of 3439640 in words is "three million, four hundred thirty-nine thousand, six hundred forty".