984778426 has 16 divisors (see below), whose sum is σ = 1562012928. Its totient is φ = 464882400.

The previous prime is 984778423. The next prime is 984778477. The reversal of 984778426 is 624877489.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (984778423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191160 + ... + 196243.

It is an arithmetic number, because the mean of its divisors is an integer number (97625808).

Almost surely, 2^984778426 is an apocalyptic number.

984778426 is a deficient number, since it is larger than the sum of its proper divisors (577234502).

984778426 is a wasteful number, since it uses less digits than its factorization.

984778426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387477.

The product of its digits is 5419008, while the sum is 55.

The square root of 984778426 is about 31381.1794870747. The cubic root of 984778426 is about 994.9001780282.

The spelling of 984778426 in words is "nine hundred eighty-four million, seven hundred seventy-eight thousand, four hundred twenty-six".