494128441 has 3 divisors (see below), whose sum is σ = 494150671. Its totient is φ = 494106212.

The previous prime is 494128429. The next prime is 494128447. The reversal of 494128441 is 144821494.

The square root of 494128441 is 22229.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 133888041 + 360240400 = 11571^2 + 18980^2 .

It is not a de Polignac number, because 494128441 - 2¹⁵ = 494095673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 494128441.

It is not an unprimeable number, because it can be changed into a prime (494128447) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11115 + ... + 33343.

Almost surely, 2^494128441 is an apocalyptic number.

494128441 is the 22229-th square number.

494128441 is the 11115-th centered octagonal number.

It is an amenable number.

494128441 is a deficient number, since it is larger than the sum of its proper divisors (22230).

494128441 is an frugal number, since it uses more digits than its factorization.

494128441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44458 (or 22229 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The cubic root of 494128441 is about 790.5814450450.

Multiplying 494128441 by its product of digits (36864), we get a square (18215550849024 = 4267968²).

The spelling of 494128441 in words is "four hundred ninety-four million, one hundred twenty-eight thousand, four hundred forty-one".