328479377 has 4 divisors (see below), whose sum is σ = 337357236. Its totient is φ = 319601520.

The previous prime is 328479337. The next prime is 328479383. The reversal of 328479377 is 773974823.

It is a Cunningham number, because it is equal to 18124²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 293916736 + 34562641 = 17144^2 + 5879^2 .

It is a cyclic number.

It is not a de Polignac number, because 328479377 - 2⁸ = 328479121 is a prime.

It is a super-2 number, since 2×328479377² = 215797402228616258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328479337) 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, 4438874 + ... + 4438947.

It is an arithmetic number, because the mean of its divisors is an integer number (84339309).

Almost surely, 2^328479377 is an apocalyptic number.

328479377 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

328479377 is a deficient number, since it is larger than the sum of its proper divisors (8877859).

328479377 is an equidigital number, since it uses as much as digits as its factorization.

328479377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8877858.

The product of its digits is 1778112, while the sum is 50.

The square root of 328479377 is about 18124.0000275877. Note that the first 4 decimals coincide. The cubic root of 328479377 is about 689.9792593360.

It can be divided in two parts, 32847 and 9377, that added together give a palindrome (42224).

The spelling of 328479377 in words is "three hundred twenty-eight million, four hundred seventy-nine thousand, three hundred seventy-seven".