356820449 has 2 divisors, whose sum is σ = 356820450. Its totient is φ = 356820448.

The previous prime is 356820427. The next prime is 356820487. The reversal of 356820449 is 944028653.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 356001424 + 819025 = 18868^2 + 905^2 .

It is an emirp because it is prime and its reverse (944028653) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 356820449 - 2²⁰ = 355771873 is a prime.

It is not a weakly prime, because it can be changed into another prime (356820649) 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, 178410224 + 178410225.

It is an arithmetic number, because the mean of its divisors is an integer number (178410225).

Almost surely, 2^356820449 is an apocalyptic number.

It is an amenable number.

356820449 is a deficient number, since it is larger than the sum of its proper divisors (1).

356820449 is an equidigital number, since it uses as much as digits as its factorization.

356820449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 356820449 is about 18889.6916067997. The cubic root of 356820449 is about 709.2781455325.

The spelling of 356820449 in words is "three hundred fifty-six million, eight hundred twenty thousand, four hundred forty-nine".