823370493 has 32 divisors (see below), whose sum is σ = 1229386752. Its totient is φ = 485856000.

The previous prime is 823370489. The next prime is 823370519. The reversal of 823370493 is 394073328.

It is not a de Polignac number, because 823370493 - 2² = 823370489 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823370593) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 568296 + ... + 569742.

It is an arithmetic number, because the mean of its divisors is an integer number (38418336).

Almost surely, 2^823370493 is an apocalyptic number.

It is an amenable number.

823370493 is a deficient number, since it is larger than the sum of its proper divisors (406016259).

823370493 is a wasteful number, since it uses less digits than its factorization.

823370493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 823370493 is about 28694.4331360632. The cubic root of 823370493 is about 937.2708272542.

The spelling of 823370493 in words is "eight hundred twenty-three million, three hundred seventy thousand, four hundred ninety-three".