978992363 has 2 divisors, whose sum is σ = 978992364. Its totient is φ = 978992362.

The previous prime is 978992359. The next prime is 978992407. The reversal of 978992363 is 363299879.

It is a weak prime.

It is an emirp because it is prime and its reverse (363299879) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 978992363 - 2² = 978992359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 978992299 and 978992308.

It is not a weakly prime, because it can be changed into another prime (978992303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489496181 + 489496182.

It is an arithmetic number, because the mean of its divisors is an integer number (489496182).

Almost surely, 2^978992363 is an apocalyptic number.

978992363 is a deficient number, since it is larger than the sum of its proper divisors (1).

978992363 is an equidigital number, since it uses as much as digits as its factorization.

978992363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4408992, while the sum is 56.

The square root of 978992363 is about 31288.8536542968. The cubic root of 978992363 is about 992.9478382564.

The spelling of 978992363 in words is "nine hundred seventy-eight million, nine hundred ninety-two thousand, three hundred sixty-three".