490916878 has 4 divisors (see below), whose sum is σ = 736375320. Its totient is φ = 245458438.

The previous prime is 490916873. The next prime is 490916879. The reversal of 490916878 is 878619094.

It is a happy number.

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

It is a super-2 number, since 2×490916878² = 481998762210533768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490916873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122729218 + ... + 122729221.

It is an arithmetic number, because the mean of its divisors is an integer number (184093830).

Almost surely, 2^490916878 is an apocalyptic number.

490916878 is a deficient number, since it is larger than the sum of its proper divisors (245458442).

490916878 is a wasteful number, since it uses less digits than its factorization.

490916878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245458441.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 490916878 is about 22156.6441050986. The cubic root of 490916878 is about 788.8649394024.

The spelling of 490916878 in words is "four hundred ninety million, nine hundred sixteen thousand, eight hundred seventy-eight".