997129 has 8 divisors (see below), whose sum is σ = 1147328. Its totient is φ = 848880.

The previous prime is 997123. The next prime is 997141. The reversal of 997129 is 921799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 997129 - 2³ = 997121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (997121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 874 + ... + 1660.

It is an arithmetic number, because the mean of its divisors is an integer number (143416).

2⁹⁹⁷¹²⁹ is an apocalyptic number.

It is an amenable number.

997129 is a deficient number, since it is larger than the sum of its proper divisors (150199).

997129 is a wasteful number, since it uses less digits than its factorization.

997129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975.

The product of its digits is 10206, while the sum is 37.

The square root of 997129 is about 998.5634681882. The cubic root of 997129 is about 99.9042082687.

It can be divided in two parts, 9971 and 29, that added together give a 4-th power (10000 = 10⁴).

The spelling of 997129 in words is "nine hundred ninety-seven thousand, one hundred twenty-nine".