978042929 has 8 divisors (see below), whose sum is σ = 1036401480. Its totient is φ = 919776256.

The previous prime is 978042913. The next prime is 978042931. The reversal of 978042929 is 929240879.

It can be written as a sum of positive squares in 4 ways, for example, as 623850529 + 354192400 = 24977^2 + 18820^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 978042929 - 2⁴ = 978042913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978042959) 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, 404 + ... + 44229.

It is an arithmetic number, because the mean of its divisors is an integer number (129550185).

Almost surely, 2^978042929 is an apocalyptic number.

It is an amenable number.

978042929 is a deficient number, since it is larger than the sum of its proper divisors (58358551).

978042929 is a wasteful number, since it uses less digits than its factorization.

978042929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45939.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 978042929 is about 31273.6778937176. The cubic root of 978042929 is about 992.6267450603.

The spelling of 978042929 in words is "nine hundred seventy-eight million, forty-two thousand, nine hundred twenty-nine".