1327784397 has 8 divisors (see below), whose sum is σ = 1770548640. Its totient is φ = 885104880.

The previous prime is 1327784389. The next prime is 1327784407. The reversal of 1327784397 is 7934877231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1327784397 - 2³ = 1327784389 is a prime.

It is a super-2 number, since 2×1327784397² = 3526022809833307218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1327784327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44379 + ... + 68007.

It is an arithmetic number, because the mean of its divisors is an integer number (221318580).

Almost surely, 2^1327784397 is an apocalyptic number.

It is an amenable number.

1327784397 is a deficient number, since it is larger than the sum of its proper divisors (442764243).

1327784397 is a wasteful number, since it uses less digits than its factorization.

1327784397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42363.

The product of its digits is 1778112, while the sum is 51.

The square root of 1327784397 is about 36438.7760085324. The cubic root of 1327784397 is about 1099.1134446174.

The spelling of 1327784397 in words is "one billion, three hundred twenty-seven million, seven hundred eighty-four thousand, three hundred ninety-seven".