939478697 has 2 divisors, whose sum is σ = 939478698. Its totient is φ = 939478696.

The previous prime is 939478679. The next prime is 939478703. The reversal of 939478697 is 796874939.

Together with previous prime (939478679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 543309481 + 396169216 = 23309^2 + 19904^2 .

It is a cyclic number.

It is not a de Polignac number, because 939478697 - 2¹⁰ = 939477673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (939478597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469739348 + 469739349.

It is an arithmetic number, because the mean of its divisors is an integer number (469739349).

Almost surely, 2^939478697 is an apocalyptic number.

It is an amenable number.

939478697 is a deficient number, since it is larger than the sum of its proper divisors (1).

939478697 is an equidigital number, since it uses as much as digits as its factorization.

939478697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20575296, while the sum is 62.

The square root of 939478697 is about 30650.9167399606. The cubic root of 939478697 is about 979.4049897061.

The spelling of 939478697 in words is "nine hundred thirty-nine million, four hundred seventy-eight thousand, six hundred ninety-seven".