354440321 has 8 divisors (see below), whose sum is σ = 356085288. Its totient is φ = 352800000.

The previous prime is 354440287. The next prime is 354440347. The reversal of 354440321 is 123044453.

It can be written as a sum of positive squares in 4 ways, for example, as 6431296 + 348009025 = 2536^2 + 18655^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 354440321 - 2⁶ = 354440257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354440621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294521 + ... + 295721.

It is an arithmetic number, because the mean of its divisors is an integer number (44510661).

Almost surely, 2^354440321 is an apocalyptic number.

It is an amenable number.

354440321 is a deficient number, since it is larger than the sum of its proper divisors (1644967).

354440321 is a wasteful number, since it uses less digits than its factorization.

354440321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 354440321 is about 18826.5854843623. The cubic root of 354440321 is about 707.6975743746.

Adding to 354440321 its reverse (123044453), we get a palindrome (477484774).

The spelling of 354440321 in words is "three hundred fifty-four million, four hundred forty thousand, three hundred twenty-one".