1321472393 has 2 divisors, whose sum is σ = 1321472394. Its totient is φ = 1321472392.

The previous prime is 1321472359. The next prime is 1321472447. The reversal of 1321472393 is 3932741231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1321467904 + 4489 = 36352^2 + 67^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321472393 - 2¹⁴ = 1321456009 is a prime.

It is a super-2 number, since 2×1321472393² = 3492578570922292898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1321472303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660736196 + 660736197.

It is an arithmetic number, because the mean of its divisors is an integer number (660736197).

Almost surely, 2^1321472393 is an apocalyptic number.

It is an amenable number.

1321472393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321472393 is an equidigital number, since it uses as much as digits as its factorization.

1321472393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 35.

The square root of 1321472393 is about 36352.0617434555. The cubic root of 1321472393 is about 1097.3690271492.

The spelling of 1321472393 in words is "one billion, three hundred twenty-one million, four hundred seventy-two thousand, three hundred ninety-three".