997249 has 4 divisors (see below), whose sum is σ = 1087920. Its totient is φ = 906580.

The previous prime is 997247. The next prime is 997259. The reversal of 997249 is 942799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 997249 - 2¹ = 997247 is a prime.

It is a Duffinian number.

997249 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (997247) 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 3 ways as a sum of consecutive naturals, for example, 45319 + ... + 45340.

It is an arithmetic number, because the mean of its divisors is an integer number (271980).

2⁹⁹⁷²⁴⁹ is an apocalyptic number.

It is an amenable number.

997249 is a deficient number, since it is larger than the sum of its proper divisors (90671).

997249 is a wasteful number, since it uses less digits than its factorization.

997249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90670.

The product of its digits is 40824, while the sum is 40.

The square root of 997249 is about 998.6235526964. The cubic root of 997249 is about 99.9082157823.

The spelling of 997249 in words is "nine hundred ninety-seven thousand, two hundred forty-nine".