3440397 has 4 divisors (see below), whose sum is σ = 4587200. Its totient is φ = 2293596.

The previous prime is 3440377. The next prime is 3440399. The reversal of 3440397 is 7930443.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3440397 - 2¹¹ = 3438349 is a prime.

It is a D-number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573397 + ... + 573402.

It is an arithmetic number, because the mean of its divisors is an integer number (1146800).

Almost surely, 2^3440397 is an apocalyptic number.

It is an amenable number.

3440397 is a deficient number, since it is larger than the sum of its proper divisors (1146803).

3440397 is a wasteful number, since it uses less digits than its factorization.

3440397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146802.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 3440397 is about 1854.8307200389. The cubic root of 3440397 is about 150.9626532201.

The spelling of 3440397 in words is "three million, four hundred forty thousand, three hundred ninety-seven".