981428979 has 8 divisors (see below), whose sum is σ = 1311437200. Its totient is φ = 652853376.

The previous prime is 981428963. The next prime is 981428993. The reversal of 981428979 is 979824189.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 981428979 - 2⁴ = 981428963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981428909) 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, 356554 + ... + 359295.

It is an arithmetic number, because the mean of its divisors is an integer number (163929650).

Almost surely, 2^981428979 is an apocalyptic number.

981428979 is a deficient number, since it is larger than the sum of its proper divisors (330008221).

981428979 is a wasteful number, since it uses less digits than its factorization.

981428979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716309.

The product of its digits is 2612736, while the sum is 57.

The square root of 981428979 is about 31327.7669009459. The cubic root of 981428979 is about 993.7709390311.

The spelling of 981428979 in words is "nine hundred eighty-one million, four hundred twenty-eight thousand, nine hundred seventy-nine".