978364808 has 8 divisors (see below), whose sum is σ = 1834434030. Its totient is φ = 489182400.

The previous prime is 978364769. The next prime is 978364817. The reversal of 978364808 is 808463879.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 934035844 + 44328964 = 30562^2 + 6658^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 978364808.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61147793 + ... + 61147808.

Almost surely, 2^978364808 is an apocalyptic number.

It is an amenable number.

978364808 is a deficient number, since it is larger than the sum of its proper divisors (856069222).

978364808 is a wasteful number, since it uses less digits than its factorization.

978364808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122295607 (or 122295603 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 53.

The square root of 978364808 is about 31278.8236351689. The cubic root of 978364808 is about 992.7356259866.

The spelling of 978364808 in words is "nine hundred seventy-eight million, three hundred sixty-four thousand, eight hundred eight".