978397283 has 2 divisors, whose sum is σ = 978397284. Its totient is φ = 978397282.

The previous prime is 978397171. The next prime is 978397289. The reversal of 978397283 is 382793879.

It is a strong prime.

978397283 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 978397283 - 2¹² = 978393187 is a prime.

It is a super-2 number, since 2×978397283² = 1914522486763564178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (978397289) 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, 489198641 + 489198642.

It is an arithmetic number, because the mean of its divisors is an integer number (489198642).

Almost surely, 2^978397283 is an apocalyptic number.

978397283 is a deficient number, since it is larger than the sum of its proper divisors (1).

978397283 is an equidigital number, since it uses as much as digits as its factorization.

978397283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 56.

The square root of 978397283 is about 31279.3427520464. The cubic root of 978397283 is about 992.7466098693.

The spelling of 978397283 in words is "nine hundred seventy-eight million, three hundred ninety-seven thousand, two hundred eighty-three".