493789961 has 8 divisors (see below), whose sum is σ = 566674944. Its totient is φ = 421490880.

The previous prime is 493789957. The next prime is 493789981. The reversal of 493789961 is 169987394.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 493789961 - 2² = 493789957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 493789897 and 493789906.

It is not an unprimeable number, because it can be changed into a prime (493789981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144665 + ... + 148038.

It is an arithmetic number, because the mean of its divisors is an integer number (70834368).

Almost surely, 2^493789961 is an apocalyptic number.

It is an amenable number.

493789961 is a deficient number, since it is larger than the sum of its proper divisors (72884983).

493789961 is a wasteful number, since it uses less digits than its factorization.

493789961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292951.

The product of its digits is 2939328, while the sum is 56.

The square root of 493789961 is about 22221.3852178481. The cubic root of 493789961 is about 790.4008866382.

The spelling of 493789961 in words is "four hundred ninety-three million, seven hundred eighty-nine thousand, nine hundred sixty-one".