3407440 has 40 divisors (see below), whose sum is σ = 7999488. Its totient is φ = 1349760.

The previous prime is 3407431. The next prime is 3407447. The reversal of 3407440 is 447043.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×3407440² = 23221294707200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3407447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15169 + ... + 15391.

Almost surely, 2^3407440 is an apocalyptic number.

It is an amenable number.

3407440 is an abundant number, since it is smaller than the sum of its proper divisors (4592048).

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

3407440 is a wasteful number, since it uses less digits than its factorization.

3407440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 3407440 is about 1845.9252422566. The cubic root of 3407440 is about 150.4790609677.

The spelling of 3407440 in words is "three million, four hundred seven thousand, four hundred forty".