355441409 has 2 divisors, whose sum is σ = 355441410. Its totient is φ = 355441408.

The previous prime is 355441343. The next prime is 355441433. The reversal of 355441409 is 904144553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 347002384 + 8439025 = 18628^2 + 2905^2 .

It is a cyclic number.

It is not a de Polignac number, because 355441409 - 2²⁸ = 87005953 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (355440409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177720704 + 177720705.

It is an arithmetic number, because the mean of its divisors is an integer number (177720705).

Almost surely, 2^355441409 is an apocalyptic number.

It is an amenable number.

355441409 is a deficient number, since it is larger than the sum of its proper divisors (1).

355441409 is an equidigital number, since it uses as much as digits as its factorization.

355441409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 355441409 is about 18853.1538210454. The cubic root of 355441409 is about 708.3632262479.

The spelling of 355441409 in words is "three hundred fifty-five million, four hundred forty-one thousand, four hundred nine".