938693321 has 2 divisors, whose sum is σ = 938693322. Its totient is φ = 938693320.

The previous prime is 938693303. The next prime is 938693333. The reversal of 938693321 is 123396839.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 938503225 + 190096 = 30635^2 + 436^2 .

It is a cyclic number.

It is not a de Polignac number, because 938693321 - 2¹⁸ = 938431177 is a prime.

It is a super-2 number, since 2×938693321² = 1762290301780018082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (938693381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469346660 + 469346661.

It is an arithmetic number, because the mean of its divisors is an integer number (469346661).

Almost surely, 2^938693321 is an apocalyptic number.

It is an amenable number.

938693321 is a deficient number, since it is larger than the sum of its proper divisors (1).

938693321 is an equidigital number, since it uses as much as digits as its factorization.

938693321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 44.

The square root of 938693321 is about 30638.1024379775. The cubic root of 938693321 is about 979.1319958928.

The spelling of 938693321 in words is "nine hundred thirty-eight million, six hundred ninety-three thousand, three hundred twenty-one".