997355941 has 4 divisors (see below), whose sum is σ = 997879212. Its totient is φ = 996832672.

The previous prime is 997355939. The next prime is 997355977. The reversal of 997355941 is 149553799.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 149553799 = 83 ⋅1801853.

It can be written as a sum of positive squares in 2 ways, for example, as 724148100 + 273207841 = 26910^2 + 16529^2 .

It is a cyclic number.

It is not a de Polignac number, because 997355941 - 2¹ = 997355939 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997355921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258766 + ... + 262591.

It is an arithmetic number, because the mean of its divisors is an integer number (249469803).

Almost surely, 2^997355941 is an apocalyptic number.

It is an amenable number.

997355941 is a deficient number, since it is larger than the sum of its proper divisors (523271).

997355941 is a wasteful number, since it uses less digits than its factorization.

997355941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523270.

The product of its digits is 1530900, while the sum is 52.

The square root of 997355941 is about 31580.9426870067. The cubic root of 997355941 is about 999.1178690738.

The spelling of 997355941 in words is "nine hundred ninety-seven million, three hundred fifty-five thousand, nine hundred forty-one".