997444097 has 4 divisors (see below), whose sum is σ = 1074170580. Its totient is φ = 920717616.

The previous prime is 997444081. The next prime is 997444099. The reversal of 997444097 is 790444799.

997444097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 790444799 = 659 ⋅1199461.

It can be written as a sum of positive squares in 2 ways, for example, as 300536896 + 696907201 = 17336^2 + 26399^2 .

It is not a de Polignac number, because 997444097 - 2⁴ = 997444081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997444099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38363222 + ... + 38363247.

It is an arithmetic number, because the mean of its divisors is an integer number (268542645).

Almost surely, 2^997444097 is an apocalyptic number.

It is an amenable number.

997444097 is a deficient number, since it is larger than the sum of its proper divisors (76726483).

997444097 is a wasteful number, since it uses less digits than its factorization.

997444097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76726482.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The square root of 997444097 is about 31582.3383713113. The cubic root of 997444097 is about 999.1473054520.

The spelling of 997444097 in words is "nine hundred ninety-seven million, four hundred forty-four thousand, ninety-seven".