978904363 has 2 divisors, whose sum is σ = 978904364. Its totient is φ = 978904362.

The previous prime is 978904361. The next prime is 978904429. The reversal of 978904363 is 363409879.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 978904363 - 2¹ = 978904361 is a prime.

Together with 978904361, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (978904361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489452181 + 489452182.

It is an arithmetic number, because the mean of its divisors is an integer number (489452182).

Almost surely, 2^978904363 is an apocalyptic number.

978904363 is a deficient number, since it is larger than the sum of its proper divisors (1).

978904363 is an equidigital number, since it uses as much as digits as its factorization.

978904363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 978904363 is about 31287.4473711104. The cubic root of 978904363 is about 992.9180858868.

The spelling of 978904363 in words is "nine hundred seventy-eight million, nine hundred four thousand, three hundred sixty-three".