321149489 has 2 divisors, whose sum is σ = 321149490. Its totient is φ = 321149488.

The previous prime is 321149471. The next prime is 321149531. The reversal of 321149489 is 984941123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162817600 + 158331889 = 12760^2 + 12583^2 .

It is a cyclic number.

It is not a de Polignac number, because 321149489 - 2¹² = 321145393 is a prime.

It is a super-2 number, since 2×321149489² = 206273988569922242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (321149459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160574744 + 160574745.

It is an arithmetic number, because the mean of its divisors is an integer number (160574745).

Almost surely, 2^321149489 is an apocalyptic number.

It is an amenable number.

321149489 is a deficient number, since it is larger than the sum of its proper divisors (1).

321149489 is an equidigital number, since it uses as much as digits as its factorization.

321149489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 41.

The square root of 321149489 is about 17920.6442127508. The cubic root of 321149489 is about 684.8083993580.

The spelling of 321149489 in words is "three hundred twenty-one million, one hundred forty-nine thousand, four hundred eighty-nine".