297978955 has 4 divisors (see below), whose sum is σ = 357574752. Its totient is φ = 238383160.

The previous prime is 297978953. The next prime is 297978971. The reversal of 297978955 is 559879792.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 297978955 - 2¹ = 297978953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 297978893 and 297978902.

It is not an unprimeable number, because it can be changed into a prime (297978953) 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 in 3 ways as a sum of consecutive naturals, for example, 29797891 + ... + 29797900.

It is an arithmetic number, because the mean of its divisors is an integer number (89393688).

Almost surely, 2^297978955 is an apocalyptic number.

297978955 is a deficient number, since it is larger than the sum of its proper divisors (59595797).

297978955 is an equidigital number, since it uses as much as digits as its factorization.

297978955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59595796.

The product of its digits is 14288400, while the sum is 61.

The square root of 297978955 is about 17262.0669388112. The cubic root of 297978955 is about 667.9262792597.

The spelling of 297978955 in words is "two hundred ninety-seven million, nine hundred seventy-eight thousand, nine hundred fifty-five".