354021449 has 2 divisors, whose sum is σ = 354021450. Its totient is φ = 354021448.

The previous prime is 354021431. The next prime is 354021469. The reversal of 354021449 is 944120453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335805625 + 18215824 = 18325^2 + 4268^2 .

It is a cyclic number.

It is not a de Polignac number, because 354021449 - 2¹² = 354017353 is a prime.

It is not a weakly prime, because it can be changed into another prime (354021419) 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 as a sum of consecutive naturals, namely, 177010724 + 177010725.

It is an arithmetic number, because the mean of its divisors is an integer number (177010725).

Almost surely, 2^354021449 is an apocalyptic number.

It is an amenable number.

354021449 is a deficient number, since it is larger than the sum of its proper divisors (1).

354021449 is an equidigital number, since it uses as much as digits as its factorization.

354021449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 354021449 is about 18815.4577143369. The cubic root of 354021449 is about 707.4186825260.

The spelling of 354021449 in words is "three hundred fifty-four million, twenty-one thousand, four hundred forty-nine".