978331442 has 16 divisors (see below), whose sum is σ = 1638137952. Its totient is φ = 434353920.

The previous prime is 978331441. The next prime is 978331469. The reversal of 978331442 is 244133879.

It is a self number, because there is not a number n which added to its sum of digits gives 978331442.

It is not an unprimeable number, because it can be changed into a prime (978331441) 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 in 7 ways as a sum of consecutive naturals, for example, 516143 + ... + 518034.

It is an arithmetic number, because the mean of its divisors is an integer number (102383622).

Almost surely, 2^978331442 is an apocalyptic number.

978331442 is a deficient number, since it is larger than the sum of its proper divisors (659806510).

978331442 is a wasteful number, since it uses less digits than its factorization.

978331442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034233.

The product of its digits is 145152, while the sum is 41.

The square root of 978331442 is about 31278.2902665731. The cubic root of 978331442 is about 992.7243404916.

The spelling of 978331442 in words is "nine hundred seventy-eight million, three hundred thirty-one thousand, four hundred forty-two".