1253993 has 4 divisors (see below), whose sum is σ = 1350468. Its totient is φ = 1157520.

The previous prime is 1253969. The next prime is 1253999. The reversal of 1253993 is 3993521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 795664 + 458329 = 892^2 + 677^2 .

It is not a de Polignac number, because 1253993 - 2⁸ = 1253737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48218 + ... + 48243.

It is an arithmetic number, because the mean of its divisors is an integer number (337617).

2^1253993 is an apocalyptic number.

1253993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1253993 is a deficient number, since it is larger than the sum of its proper divisors (96475).

1253993 is an equidigital number, since it uses as much as digits as its factorization.

1253993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96474.

The product of its digits is 7290, while the sum is 32.

The square root of 1253993 is about 1119.8182888308. The cubic root of 1253993 is about 107.8363146860.

The spelling of 1253993 in words is "one million, two hundred fifty-three thousand, nine hundred ninety-three".