354440 has 16 divisors (see below), whose sum is σ = 797580. Its totient is φ = 141760.

The previous prime is 354439. The next prime is 354443. The reversal of 354440 is 44453.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 329476 + 24964 = 574^2 + 158^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (354443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4391 + ... + 4470.

2³⁵⁴⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

354440 is an abundant number, since it is smaller than the sum of its proper divisors (443140).

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

354440 is a wasteful number, since it uses less digits than its factorization.

354440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8872 (or 8868 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 354440 is about 595.3486373546. The cubic root of 354440 is about 70.7697360732.

Adding to 354440 its reverse (44453), we get a palindrome (398893).

The spelling of 354440 in words is "three hundred fifty-four thousand, four hundred forty".