921344493 has 16 divisors (see below), whose sum is σ = 1250574336. Its totient is φ = 603239280.

The previous prime is 921344491. The next prime is 921344513. The reversal of 921344493 is 394443129.

It is not a de Polignac number, because 921344493 - 2¹ = 921344491 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921344491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47796 + ... + 64242.

It is an arithmetic number, because the mean of its divisors is an integer number (78160896).

Almost surely, 2^921344493 is an apocalyptic number.

It is an amenable number.

921344493 is a deficient number, since it is larger than the sum of its proper divisors (329229843).

921344493 is a wasteful number, since it uses less digits than its factorization.

921344493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16784.

The product of its digits is 93312, while the sum is 39.

The square root of 921344493 is about 30353.6569954923. The cubic root of 921344493 is about 973.0623778089.

The spelling of 921344493 in words is "nine hundred twenty-one million, three hundred forty-four thousand, four hundred ninety-three".