320746969 has 4 divisors (see below), whose sum is σ = 329415844. Its totient is φ = 312078096.

The previous prime is 320746963. The next prime is 320746981. The reversal of 320746969 is 969647023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 969647023 = 1459 ⋅664597.

It can be written as a sum of positive squares in 2 ways, for example, as 242954569 + 77792400 = 15587^2 + 8820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320746969 is a prime.

It is a super-2 number, since 2×320746969² = 205757236245373922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320746963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4334382 + ... + 4334455.

It is an arithmetic number, because the mean of its divisors is an integer number (82353961).

Almost surely, 2^320746969 is an apocalyptic number.

It is an amenable number.

320746969 is a deficient number, since it is larger than the sum of its proper divisors (8668875).

320746969 is an equidigital number, since it uses as much as digits as its factorization.

320746969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8668874.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 320746969 is about 17909.4100684528. The cubic root of 320746969 is about 684.5221730260.

It can be divided in two parts, 3207 and 46969, that added together give a square (50176 = 224²).

The spelling of 320746969 in words is "three hundred twenty million, seven hundred forty-six thousand, nine hundred sixty-nine".