972222337 has 2 divisors, whose sum is σ = 972222338. Its totient is φ = 972222336.

The previous prime is 972222319. The next prime is 972222347. The reversal of 972222337 is 733222279.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 812478016 + 159744321 = 28504^2 + 12639^2 .

It is an emirp because it is prime and its reverse (733222279) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 972222337 - 2¹¹ = 972220289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 972222296 and 972222305.

It is not a weakly prime, because it can be changed into another prime (972222347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486111168 + 486111169.

It is an arithmetic number, because the mean of its divisors is an integer number (486111169).

Almost surely, 2^972222337 is an apocalyptic number.

It is an amenable number.

972222337 is a deficient number, since it is larger than the sum of its proper divisors (1).

972222337 is an equidigital number, since it uses as much as digits as its factorization.

972222337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 37.

The square root of 972222337 is about 31180.4800636552. The cubic root of 972222337 is about 990.6536977784.

The spelling of 972222337 in words is "nine hundred seventy-two million, two hundred twenty-two thousand, three hundred thirty-seven".