3440390 has 8 divisors (see below), whose sum is σ = 6192720. Its totient is φ = 1376152.

The previous prime is 3440377. The next prime is 3440399. The reversal of 3440390 is 930443.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440399) 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, 172010 + ... + 172029.

It is an arithmetic number, because the mean of its divisors is an integer number (774090).

Almost surely, 2^3440390 is an apocalyptic number.

3440390 is a deficient number, since it is larger than the sum of its proper divisors (2752330).

3440390 is a wasteful number, since it uses less digits than its factorization.

3440390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344046.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 3440390 is about 1854.8288330733. The cubic root of 3440390 is about 150.9625508347.

The spelling of 3440390 in words is "three million, four hundred forty thousand, three hundred ninety".