322987349 has 2 divisors, whose sum is σ = 322987350. Its totient is φ = 322987348.

The previous prime is 322987333. The next prime is 322987361. The reversal of 322987349 is 943789223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 322023025 + 964324 = 17945^2 + 982^2 .

It is a cyclic number.

It is not a de Polignac number, because 322987349 - 2⁴ = 322987333 is a prime.

It is a super-2 number, since 2×322987349² = 208641655228095602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (322987309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161493674 + 161493675.

It is an arithmetic number, because the mean of its divisors is an integer number (161493675).

Almost surely, 2^322987349 is an apocalyptic number.

It is an amenable number.

322987349 is a deficient number, since it is larger than the sum of its proper divisors (1).

322987349 is an equidigital number, since it uses as much as digits as its factorization.

322987349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The square root of 322987349 is about 17971.8487919301. The cubic root of 322987349 is about 686.1122456556.

The spelling of 322987349 in words is "three hundred twenty-two million, nine hundred eighty-seven thousand, three hundred forty-nine".