1217444493 has 16 divisors (see below), whose sum is σ = 1677933056. Its totient is φ = 784365120.

The previous prime is 1217444467. The next prime is 1217444497. The reversal of 1217444493 is 3944447121.

It is not a de Polignac number, because 1217444493 - 2⁶ = 1217444429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217444497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61755 + ... + 79047.

It is an arithmetic number, because the mean of its divisors is an integer number (104870816).

Almost surely, 2^1217444493 is an apocalyptic number.

It is an amenable number.

1217444493 is a deficient number, since it is larger than the sum of its proper divisors (460488563).

1217444493 is a wasteful number, since it uses less digits than its factorization.

1217444493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18084.

The product of its digits is 96768, while the sum is 39.

The square root of 1217444493 is about 34891.8972399037. The cubic root of 1217444493 is about 1067.7831334201.

The spelling of 1217444493 in words is "one billion, two hundred seventeen million, four hundred forty-four thousand, four hundred ninety-three".