1396921345 has 8 divisors (see below), whose sum is σ = 1677015360. Its totient is φ = 1117063920.

The previous prime is 1396921327. The next prime is 1396921367. The reversal of 1396921345 is 5431296931.

It is a happy number.

1396921345 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1396921345 - 2⁵ = 1396921313 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45885 + ... + 69994.

It is an arithmetic number, because the mean of its divisors is an integer number (209626920).

Almost surely, 2^1396921345 is an apocalyptic number.

It is an amenable number.

1396921345 is a deficient number, since it is larger than the sum of its proper divisors (280094015).

1396921345 is a wasteful number, since it uses less digits than its factorization.

1396921345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118295.

The product of its digits is 174960, while the sum is 43.

The square root of 1396921345 is about 37375.4109676402. The cubic root of 1396921345 is about 1117.8683266212.

The spelling of 1396921345 in words is "one billion, three hundred ninety-six million, nine hundred twenty-one thousand, three hundred forty-five".