978862471 has 2 divisors, whose sum is σ = 978862472. Its totient is φ = 978862470.

The previous prime is 978862453. The next prime is 978862477. The reversal of 978862471 is 174268879.

It is a strong prime.

It is an emirp because it is prime and its reverse (174268879) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 978862471 - 2⁹ = 978861959 is a prime.

It is a super-3 number, since 3×978862471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978862477) 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 as a sum of consecutive naturals, namely, 489431235 + 489431236.

It is an arithmetic number, because the mean of its divisors is an integer number (489431236).

Almost surely, 2^978862471 is an apocalyptic number.

978862471 is a deficient number, since it is larger than the sum of its proper divisors (1).

978862471 is an equidigital number, since it uses as much as digits as its factorization.

978862471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 52.

The square root of 978862471 is about 31286.7778941840. Note that the first 3 decimals coincide. The cubic root of 978862471 is about 992.9039217800.

The spelling of 978862471 in words is "nine hundred seventy-eight million, eight hundred sixty-two thousand, four hundred seventy-one".