1396921343 has 4 divisors (see below), whose sum is σ = 1397035848. Its totient is φ = 1396806840.

The previous prime is 1396921327. The next prime is 1396921367. The reversal of 1396921343 is 3431296931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3431296931 = 137 ⋅25045963.

It is a cyclic number.

It is not a de Polignac number, because 1396921343 - 2⁴ = 1396921327 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1396921343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396921303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36428 + ... + 64193.

It is an arithmetic number, because the mean of its divisors is an integer number (349258962).

Almost surely, 2^1396921343 is an apocalyptic number.

1396921343 is a deficient number, since it is larger than the sum of its proper divisors (114505).

1396921343 is a wasteful number, since it uses less digits than its factorization.

1396921343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114504.

The product of its digits is 104976, while the sum is 41.

The square root of 1396921343 is about 37375.4109408847. The cubic root of 1396921343 is about 1117.8683260877.

The spelling of 1396921343 in words is "one billion, three hundred ninety-six million, nine hundred twenty-one thousand, three hundred forty-three".