354209 has 2 divisors, whose sum is σ = 354210. Its totient is φ = 354208.

The previous prime is 354181. The next prime is 354247. The reversal of 354209 is 902453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305809 + 48400 = 553^2 + 220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354209 is a prime.

It is a super-3 number, since 3×354209³ = 133321450591053987, which contains 333 as substring.

It is a d-powerful number, because it can be written as 3⁵ + 5 + 2¹⁵ + 4⁹ + 0 + 9⁵ .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 354209.

It is not a weakly prime, because it can be changed into another prime (354259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177104 + 177105.

It is an arithmetic number, because the mean of its divisors is an integer number (177105).

2³⁵⁴²⁰⁹ is an apocalyptic number.

It is an amenable number.

354209 is a deficient number, since it is larger than the sum of its proper divisors (1).

354209 is an equidigital number, since it uses as much as digits as its factorization.

354209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 354209 is about 595.1546017633. The cubic root of 354209 is about 70.7543584241.

The spelling of 354209 in words is "three hundred fifty-four thousand, two hundred nine".