494020789 has 4 divisors (see below), whose sum is σ = 494065440. Its totient is φ = 493976140.

The previous prime is 494020783. The next prime is 494020801. The reversal of 494020789 is 987020494.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 987020494 = 2 ⋅493510247.

It is a cyclic number.

It is not a de Polignac number, because 494020789 - 2⁵ = 494020757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494020783) 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, 8022 + ... + 32440.

It is an arithmetic number, because the mean of its divisors is an integer number (123516360).

Almost surely, 2^494020789 is an apocalyptic number.

It is an amenable number.

494020789 is a deficient number, since it is larger than the sum of its proper divisors (44651).

494020789 is a wasteful number, since it uses less digits than its factorization.

494020789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44650.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 494020789 is about 22226.5784366375. The cubic root of 494020789 is about 790.5240282224.

The spelling of 494020789 in words is "four hundred ninety-four million, twenty thousand, seven hundred eighty-nine".