490846993 has 16 divisors (see below), whose sum is σ = 604696960. Its totient is φ = 387991296.

The previous prime is 490846981. The next prime is 490847009. The reversal of 490846993 is 399648094.

It is a de Polignac number, because none of the positive numbers 2^k-490846993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 490846993.

It is not an unprimeable number, because it can be changed into a prime (490846693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130921 + ... + 134617.

It is an arithmetic number, because the mean of its divisors is an integer number (37793560).

Almost surely, 2^490846993 is an apocalyptic number.

It is an amenable number.

490846993 is a deficient number, since it is larger than the sum of its proper divisors (113849967).

490846993 is a wasteful number, since it uses less digits than its factorization.

490846993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5176.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The square root of 490846993 is about 22155.0669825212. The cubic root of 490846993 is about 788.8275043871.

The spelling of 490846993 in words is "four hundred ninety million, eight hundred forty-six thousand, nine hundred ninety-three".