490494949 has 6 divisors (see below), whose sum is σ = 570575814. Its totient is φ = 420424200.

The previous prime is 490494947. The next prime is 490494971. The reversal of 490494949 is 949494094.

It can be written as a sum of positive squares in only one way, i.e., 343842849 + 146652100 = 18543^2 + 12110^2 .

It is not a de Polignac number, because 490494949 - 2¹ = 490494947 is a prime.

It is a Duffinian number.

490494949 is a modest number, since divided by 494949 gives 490 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 490494896 and 490494905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490494943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5005002 + ... + 5005099.

It is an arithmetic number, because the mean of its divisors is an integer number (95095969).

Almost surely, 2^490494949 is an apocalyptic number.

490494949 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

490494949 is a deficient number, since it is larger than the sum of its proper divisors (80080865).

490494949 is a wasteful number, since it uses less digits than its factorization.

490494949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10010115 (or 10010108 counting only the distinct ones).

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

The square root of 490494949 is about 22147.1205577610. The cubic root of 490494949 is about 788.6388723481.

The spelling of 490494949 in words is "four hundred ninety million, four hundred ninety-four thousand, nine hundred forty-nine".