997140941 has 2 divisors, whose sum is σ = 997140942. Its totient is φ = 997140940.

The previous prime is 997140917. The next prime is 997140961. The reversal of 997140941 is 149041799.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 867066916 + 130074025 = 29446^2 + 11405^2 .

It is an emirp because it is prime and its reverse (149041799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 997140941 - 2¹⁰ = 997139917 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 997140892 and 997140901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997140961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498570470 + 498570471.

It is an arithmetic number, because the mean of its divisors is an integer number (498570471).

Almost surely, 2^997140941 is an apocalyptic number.

It is an amenable number.

997140941 is a deficient number, since it is larger than the sum of its proper divisors (1).

997140941 is an equidigital number, since it uses as much as digits as its factorization.

997140941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 997140941 is about 31577.5385519518. The cubic root of 997140941 is about 999.0460706415.

The spelling of 997140941 in words is "nine hundred ninety-seven million, one hundred forty thousand, nine hundred forty-one".