1097993 has 12 divisors (see below), whose sum is σ = 1218780. Its totient is φ = 988416.

The previous prime is 1097983. The next prime is 1098017. The reversal of 1097993 is 3997901.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 273529 + 824464 = 523^2 + 908^2 .

It is not a de Polignac number, because 1097993 - 2¹⁰ = 1096969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1097903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12293 + ... + 12381.

It is an arithmetic number, because the mean of its divisors is an integer number (101565).

2^1097993 is an apocalyptic number.

1097993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1097993 is a deficient number, since it is larger than the sum of its proper divisors (120787).

1097993 is an equidigital number, since it uses as much as digits as its factorization.

1097993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 1097993 is about 1047.8516116321. The cubic root of 1097993 is about 103.1651919246.

The spelling of 1097993 in words is "one million, ninety-seven thousand, nine hundred ninety-three".