490778349 has 16 divisors (see below), whose sum is σ = 659755200. Its totient is φ = 324504576.

The previous prime is 490778297. The next prime is 490778363. The reversal of 490778349 is 943877094.

It is a happy number.

It is not a de Polignac number, because 490778349 - 2¹¹ = 490776301 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490778749) 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, 224142 + ... + 226320.

It is an arithmetic number, because the mean of its divisors is an integer number (41234700).

Almost surely, 2^490778349 is an apocalyptic number.

It is an amenable number.

490778349 is a deficient number, since it is larger than the sum of its proper divisors (168976851).

490778349 is a wasteful number, since it uses less digits than its factorization.

490778349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The square root of 490778349 is about 22153.5177567808. The cubic root of 490778349 is about 788.7907306739.

The spelling of 490778349 in words is "four hundred ninety million, seven hundred seventy-eight thousand, three hundred forty-nine".