978429772 has 6 divisors (see below), whose sum is σ = 1712252108. Its totient is φ = 489214884.

The previous prime is 978429763. The next prime is 978429791. The reversal of 978429772 is 277924879.

It is a happy number.

978429772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122303718 + ... + 122303725.

Almost surely, 2^978429772 is an apocalyptic number.

It is an amenable number.

978429772 is a deficient number, since it is larger than the sum of its proper divisors (733822336).

978429772 is a wasteful number, since it uses less digits than its factorization.

978429772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244607447 (or 244607445 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 55.

The square root of 978429772 is about 31279.8620840949. The cubic root of 978429772 is about 992.7575982439.

The spelling of 978429772 in words is "nine hundred seventy-eight million, four hundred twenty-nine thousand, seven hundred seventy-two".