3440438 has 4 divisors (see below), whose sum is σ = 5160660. Its totient is φ = 1720218.

The previous prime is 3440429. The next prime is 3440491. The reversal of 3440438 is 8340443.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×3440438² = 23673227263688, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860108 + ... + 860111.

It is an arithmetic number, because the mean of its divisors is an integer number (1290165).

Almost surely, 2^3440438 is an apocalyptic number.

3440438 is a deficient number, since it is larger than the sum of its proper divisors (1720222).

3440438 is a wasteful number, since it uses less digits than its factorization.

3440438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720221.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 3440438 is about 1854.8417722275. The cubic root of 3440438 is about 150.9632529033.

The spelling of 3440438 in words is "three million, four hundred forty thousand, four hundred thirty-eight".