1993297 has 8 divisors (see below), whose sum is σ = 2077992. Its totient is φ = 1910400.

The previous prime is 1993289. The next prime is 1993307. The reversal of 1993297 is 7923991.

It can be written as a sum of positive squares in 4 ways, for example, as 77841 + 1915456 = 279^2 + 1384^2 .

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 1993297 - 2³ = 1993289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1993217) 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, 2103 + ... + 2899.

It is an arithmetic number, because the mean of its divisors is an integer number (259749).

2^1993297 is an apocalyptic number.

It is an amenable number.

1993297 is a deficient number, since it is larger than the sum of its proper divisors (84695).

1993297 is an equidigital number, since it uses as much as digits as its factorization.

1993297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899.

The product of its digits is 30618, while the sum is 40.

The square root of 1993297 is about 1411.8417050080. The cubic root of 1993297 is about 125.8511932702.

The spelling of 1993297 in words is "one million, nine hundred ninety-three thousand, two hundred ninety-seven".