978331441 has 2 divisors, whose sum is σ = 978331442. Its totient is φ = 978331440.

The previous prime is 978331439. The next prime is 978331469. The reversal of 978331441 is 144133879.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 615238416 + 363093025 = 24804^2 + 19055^2 .

It is a cyclic number.

It is not a de Polignac number, because 978331441 - 2¹ = 978331439 is a prime.

Together with 978331439, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 978331394 and 978331403.

It is not a weakly prime, because it can be changed into another prime (978331411) 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, 489165720 + 489165721.

It is an arithmetic number, because the mean of its divisors is an integer number (489165721).

Almost surely, 2^978331441 is an apocalyptic number.

It is an amenable number.

978331441 is a deficient number, since it is larger than the sum of its proper divisors (1).

978331441 is an equidigital number, since it uses as much as digits as its factorization.

978331441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 978331441 is about 31278.2902505875. The cubic root of 978331441 is about 992.7243401534.

The spelling of 978331441 in words is "nine hundred seventy-eight million, three hundred thirty-one thousand, four hundred forty-one".