978049842 has 32 divisors (see below), whose sum is σ = 2438774784. Its totient is φ = 254038800.

The previous prime is 978049829. The next prime is 978049847. The reversal of 978049842 is 248940879.

It is not an unprimeable number, because it can be changed into a prime (978049847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1058034 + ... + 1058957.

It is an arithmetic number, because the mean of its divisors is an integer number (76211712).

Almost surely, 2^978049842 is an apocalyptic number.

978049842 is an abundant number, since it is smaller than the sum of its proper divisors (1460724942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

978049842 is a wasteful number, since it uses less digits than its factorization.

978049842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117014.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 978049842 is about 31273.7884177789. The cubic root of 978049842 is about 992.6290837486.

The spelling of 978049842 in words is "nine hundred seventy-eight million, forty-nine thousand, eight hundred forty-two".