3399440 has 40 divisors (see below), whose sum is σ = 8624448. Its totient is φ = 1235840.

The previous prime is 3399427. The next prime is 3399443. The reversal of 3399440 is 449933.

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

It is a junction number, because it is equal to n+sod(n) for n = 3399397 and 3399406.

It is not an unprimeable number, because it can be changed into a prime (3399443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1052 + ... + 2811.

Almost surely, 2^3399440 is an apocalyptic number.

It is an amenable number.

3399440 is an abundant number, since it is smaller than the sum of its proper divisors (5225008).

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

3399440 is a wasteful number, since it uses less digits than its factorization.

3399440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3887 (or 3881 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 3399440 is about 1843.7570338849. The cubic root of 3399440 is about 150.3612035890.

It can be divided in two parts, 339 and 9440, that added together give a palindrome (9779).

The spelling of 3399440 in words is "three million, three hundred ninety-nine thousand, four hundred forty".