972783211 has 2 divisors, whose sum is σ = 972783212. Its totient is φ = 972783210.

The previous prime is 972783199. The next prime is 972783241. The reversal of 972783211 is 112387279.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (112387279) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 972783211 - 2¹¹ = 972781163 is a prime.

It is not a weakly prime, because it can be changed into another prime (972783241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486391605 + 486391606.

It is an arithmetic number, because the mean of its divisors is an integer number (486391606).

Almost surely, 2^972783211 is an apocalyptic number.

972783211 is a deficient number, since it is larger than the sum of its proper divisors (1).

972783211 is an equidigital number, since it uses as much as digits as its factorization.

972783211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The square root of 972783211 is about 31189.4727592500. The cubic root of 972783211 is about 990.8441635006.

It can be divided in two parts, 97278 and 3211, that added together give a square (100489 = 317²).

The spelling of 972783211 in words is "nine hundred seventy-two million, seven hundred eighty-three thousand, two hundred eleven".