494809641 has 10 divisors (see below), whose sum is σ = 739160202. Its totient is φ = 329873040.

The previous prime is 494809639. The next prime is 494809661. The reversal of 494809641 is 146908494.

494809641 is a `hidden beast` number, since 49 + 480 + 96 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 417017241 + 77792400 = 20421^2 + 8820^2 .

It is not a de Polignac number, because 494809641 - 2¹ = 494809639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (494809661) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3054300 + ... + 3054461.

Almost surely, 2^494809641 is an apocalyptic number.

It is an amenable number.

494809641 is a deficient number, since it is larger than the sum of its proper divisors (244350561).

494809641 is an equidigital number, since it uses as much as digits as its factorization.

494809641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6108773 (or 6108764 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 494809641 is about 22244.3170495298. The cubic root of 494809641 is about 790.9445738378.

The spelling of 494809641 in words is "four hundred ninety-four million, eight hundred nine thousand, six hundred forty-one".