972865147 has 2 divisors, whose sum is σ = 972865148. Its totient is φ = 972865146.

The previous prime is 972865129. The next prime is 972865163. The reversal of 972865147 is 741568279.

It is a strong prime.

It is an emirp because it is prime and its reverse (741568279) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 972865147 - 2²⁷ = 838647419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 972865147.

It is not a weakly prime, because it can be changed into another prime (972865177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486432573 + 486432574.

It is an arithmetic number, because the mean of its divisors is an integer number (486432574).

Almost surely, 2^972865147 is an apocalyptic number.

972865147 is a deficient number, since it is larger than the sum of its proper divisors (1).

972865147 is an equidigital number, since it uses as much as digits as its factorization.

972865147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 49.

The square root of 972865147 is about 31190.7862517122. The cubic root of 972865147 is about 990.8719818014.

The spelling of 972865147 in words is "nine hundred seventy-two million, eight hundred sixty-five thousand, one hundred forty-seven".