494593649 has 4 divisors (see below), whose sum is σ = 539556720. Its totient is φ = 449630580.

The previous prime is 494593609. The next prime is 494593651. The reversal of 494593649 is 946395494.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 494593649 - 2¹² = 494589553 is a prime.

It is a super-2 number, since 2×494593649² = 489245755262270402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 494593649.

It is not an unprimeable number, because it can be changed into a prime (494593609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22481519 + ... + 22481540.

It is an arithmetic number, because the mean of its divisors is an integer number (134889180).

Almost surely, 2^494593649 is an apocalyptic number.

It is an amenable number.

494593649 is a deficient number, since it is larger than the sum of its proper divisors (44963071).

494593649 is a wasteful number, since it uses less digits than its factorization.

494593649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44963070.

The product of its digits is 4199040, while the sum is 53.

The square root of 494593649 is about 22239.4615267546. The cubic root of 494593649 is about 790.8294706075.

The spelling of 494593649 in words is "four hundred ninety-four million, five hundred ninety-three thousand, six hundred forty-nine".