978141959 has 2 divisors, whose sum is σ = 978141960. Its totient is φ = 978141958.

The previous prime is 978141929. The next prime is 978142003. The reversal of 978141959 is 959141879.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 978141959 - 2¹² = 978137863 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 978141959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978141929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489070979 + 489070980.

It is an arithmetic number, because the mean of its divisors is an integer number (489070980).

Almost surely, 2^978141959 is an apocalyptic number.

978141959 is a deficient number, since it is larger than the sum of its proper divisors (1).

978141959 is an equidigital number, since it uses as much as digits as its factorization.

978141959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 53.

The square root of 978141959 is about 31275.2611340017. The cubic root of 978141959 is about 992.6602461491.

The spelling of 978141959 in words is "nine hundred seventy-eight million, one hundred forty-one thousand, nine hundred fifty-nine".