1217493 has 6 divisors (see below), whose sum is σ = 1758614. Its totient is φ = 811656.

The previous prime is 1217483. The next prime is 1217509. The reversal of 1217493 is 3947121.

It can be written as a sum of positive squares in only one way, i.e., 777924 + 439569 = 882^2 + 663^2 .

It is not a de Polignac number, because 1217493 - 2⁴ = 1217477 is a prime.

It is a d-powerful number, because it can be written as 1 + 2¹⁷ + 1 + 7⁷ + 4⁹ + 9³ + 3 .

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217423) 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 5 ways as a sum of consecutive naturals, for example, 67630 + ... + 67647.

2^1217493 is an apocalyptic number.

It is an amenable number.

1217493 is a deficient number, since it is larger than the sum of its proper divisors (541121).

1217493 is a wasteful number, since it uses less digits than its factorization.

1217493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135283 (or 135280 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 1217493 is about 1103.4006525284. The cubic root of 1217493 is about 106.7797314565.

The spelling of 1217493 in words is "one million, two hundred seventeen thousand, four hundred ninety-three".