490979549 has 4 divisors (see below), whose sum is σ = 497194560. Its totient is φ = 484764540.

The previous prime is 490979543. The next prime is 490979569. The reversal of 490979549 is 945979094.

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 de Polignac number, because none of the positive numbers 2^k-490979549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 490979494 and 490979503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490979543) 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, 3107387 + ... + 3107544.

It is an arithmetic number, because the mean of its divisors is an integer number (124298640).

Almost surely, 2^490979549 is an apocalyptic number.

It is an amenable number.

490979549 is a deficient number, since it is larger than the sum of its proper divisors (6215011).

490979549 is an equidigital number, since it uses as much as digits as its factorization.

490979549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6215010.

The product of its (nonzero) digits is 3674160, while the sum is 56.

The square root of 490979549 is about 22158.0583310000. The cubic root of 490979549 is about 788.8985071021.

The spelling of 490979549 in words is "four hundred ninety million, nine hundred seventy-nine thousand, five hundred forty-nine".