3440393 has 6 divisors (see below), whose sum is σ = 3781722. Its totient is φ = 3127520.

The previous prime is 3440377. The next prime is 3440399. The reversal of 3440393 is 3930443.

It can be written as a sum of positive squares in only one way, i.e., 2795584 + 644809 = 1672^2 + 803^2 .

It is not a de Polignac number, because 3440393 - 2⁴ = 3440377 is a prime.

It is a Duffinian number.

It is a Curzon 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 5 ways as a sum of consecutive naturals, for example, 14096 + ... + 14337.

It is an arithmetic number, because the mean of its divisors is an integer number (630287).

Almost surely, 2^3440393 is an apocalyptic number.

It is an amenable number.

3440393 is a deficient number, since it is larger than the sum of its proper divisors (341329).

3440393 is a wasteful number, since it uses less digits than its factorization.

3440393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28455 (or 28444 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 3440393 is about 1854.8296417731. The cubic root of 3440393 is about 150.9625947142.

The spelling of 3440393 in words is "three million, four hundred forty thousand, three hundred ninety-three".