490249217 has 4 divisors (see below), whose sum is σ = 491187120. Its totient is φ = 489311316.

The previous prime is 490249183. The next prime is 490249219. The reversal of 490249217 is 712942094.

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 490249217 - 2²⁰ = 489200641 is a prime.

It is a super-2 number, since 2×490249217² = 480688589538226178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490249219) 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, 468167 + ... + 469212.

It is an arithmetic number, because the mean of its divisors is an integer number (122796780).

Almost surely, 2^490249217 is an apocalyptic number.

It is an amenable number.

490249217 is a deficient number, since it is larger than the sum of its proper divisors (937903).

490249217 is an equidigital number, since it uses as much as digits as its factorization.

490249217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937902.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 490249217 is about 22141.5721438203. The cubic root of 490249217 is about 788.5071508564.

The spelling of 490249217 in words is "four hundred ninety million, two hundred forty-nine thousand, two hundred seventeen".