997292147 has 2 divisors, whose sum is σ = 997292148. Its totient is φ = 997292146.

The previous prime is 997292143. The next prime is 997292161. The reversal of 997292147 is 741292799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 997292147 - 2² = 997292143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 997292095 and 997292104.

It is not a weakly prime, because it can be changed into another prime (997292143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498646073 + 498646074.

It is an arithmetic number, because the mean of its divisors is an integer number (498646074).

Almost surely, 2^997292147 is an apocalyptic number.

997292147 is a deficient number, since it is larger than the sum of its proper divisors (1).

997292147 is an equidigital number, since it uses as much as digits as its factorization.

997292147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 50.

The square root of 997292147 is about 31579.9326630061. The cubic root of 997292147 is about 999.0965663868.

The spelling of 997292147 in words is "nine hundred ninety-seven million, two hundred ninety-two thousand, one hundred forty-seven".