490949779 has 4 divisors (see below), whose sum is σ = 491019984. Its totient is φ = 490879576.

The previous prime is 490949761. The next prime is 490949801. The reversal of 490949779 is 977949094.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 490949779 - 2¹¹ = 490947731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (410949779) 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, 23287 + ... + 39040.

It is an arithmetic number, because the mean of its divisors is an integer number (122754996).

Almost surely, 2^490949779 is an apocalyptic number.

490949779 is a deficient number, since it is larger than the sum of its proper divisors (70205).

490949779 is an equidigital number, since it uses as much as digits as its factorization.

490949779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70204.

The product of its (nonzero) digits is 5143824, while the sum is 58.

The square root of 490949779 is about 22157.3865561803. The cubic root of 490949779 is about 788.8825621180.

The spelling of 490949779 in words is "four hundred ninety million, nine hundred forty-nine thousand, seven hundred seventy-nine".