997849301 has 2 divisors, whose sum is σ = 997849302. Its totient is φ = 997849300.

The previous prime is 997849253. The next prime is 997849309. The reversal of 997849301 is 103948799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 943104100 + 54745201 = 30710^2 + 7399^2 .

It is a cyclic number.

It is not a de Polignac number, because 997849301 - 2¹⁰ = 997848277 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 997849301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997849309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498924650 + 498924651.

It is an arithmetic number, because the mean of its divisors is an integer number (498924651).

Almost surely, 2^997849301 is an apocalyptic number.

It is an amenable number.

997849301 is a deficient number, since it is larger than the sum of its proper divisors (1).

997849301 is an equidigital number, since it uses as much as digits as its factorization.

997849301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 997849301 is about 31588.7527610699. The cubic root of 997849301 is about 999.2825857732.

The spelling of 997849301 in words is "nine hundred ninety-seven million, eight hundred forty-nine thousand, three hundred one".