494943637 has 4 divisors (see below), whose sum is σ = 496915776. Its totient is φ = 492971500.

The previous prime is 494943571. The next prime is 494943641. The reversal of 494943637 is 736349494.

It is a happy number.

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 494943637 - 2¹¹ = 494941589 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494943037) 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, 985693 + ... + 986194.

It is an arithmetic number, because the mean of its divisors is an integer number (124228944).

Almost surely, 2^494943637 is an apocalyptic number.

It is an amenable number.

494943637 is a deficient number, since it is larger than the sum of its proper divisors (1972139).

494943637 is a wasteful number, since it uses less digits than its factorization.

494943637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972138.

The product of its digits is 1959552, while the sum is 49.

The square root of 494943637 is about 22247.3287609996. The cubic root of 494943637 is about 791.0159641496.

The spelling of 494943637 in words is "four hundred ninety-four million, nine hundred forty-three thousand, six hundred thirty-seven".