1993797 has 12 divisors (see below), whose sum is σ = 3101644. Its totient is φ = 1226880.

The previous prime is 1993763. The next prime is 1993829. The reversal of 1993797 is 7973991.

It can be written as a sum of positive squares in 2 ways, for example, as 1083681 + 910116 = 1041^2 + 954^2 .

It is not a de Polignac number, because 1993797 - 2¹⁶ = 1928261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993757) 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 11 ways as a sum of consecutive naturals, for example, 8404 + ... + 8637.

2^1993797 is an apocalyptic number.

It is an amenable number.

1993797 is a deficient number, since it is larger than the sum of its proper divisors (1107847).

1993797 is a wasteful number, since it uses less digits than its factorization.

1993797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17060 (or 17057 counting only the distinct ones).

The product of its digits is 107163, while the sum is 45.

The square root of 1993797 is about 1412.0187675807. The cubic root of 1993797 is about 125.8617152573.

The spelling of 1993797 in words is "one million, nine hundred ninety-three thousand, seven hundred ninety-seven".