972281077 has 2 divisors, whose sum is σ = 972281078. Its totient is φ = 972281076.

The previous prime is 972281071. The next prime is 972281147. The reversal of 972281077 is 770182279.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 853165681 + 119115396 = 29209^2 + 10914^2 .

It is a cyclic number.

It is not a de Polignac number, because 972281077 - 2¹¹ = 972279029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972281071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486140538 + 486140539.

It is an arithmetic number, because the mean of its divisors is an integer number (486140539).

Almost surely, 2^972281077 is an apocalyptic number.

It is an amenable number.

972281077 is a deficient number, since it is larger than the sum of its proper divisors (1).

972281077 is an equidigital number, since it uses as much as digits as its factorization.

972281077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 43.

The square root of 972281077 is about 31181.4219848935. The cubic root of 972281077 is about 990.6736485737.

The spelling of 972281077 in words is "nine hundred seventy-two million, two hundred eighty-one thousand, seventy-seven".