1396321457 has 8 divisors (see below), whose sum is σ = 1484084160. Its totient is φ = 1309986000.

The previous prime is 1396321453. The next prime is 1396321463. The reversal of 1396321457 is 7541236931.

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

It is a cyclic number.

It is not a de Polignac number, because 1396321457 - 2² = 1396321453 is a prime.

It is a super-2 number, since 2×1396321457² = 3899427222557205698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1396321453) 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, 354794 + ... + 358707.

It is an arithmetic number, because the mean of its divisors is an integer number (185510520).

Almost surely, 2^1396321457 is an apocalyptic number.

It is an amenable number.

1396321457 is a deficient number, since it is larger than the sum of its proper divisors (87762703).

1396321457 is a wasteful number, since it uses less digits than its factorization.

1396321457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713623.

The product of its digits is 136080, while the sum is 41.

The square root of 1396321457 is about 37367.3849365995. The cubic root of 1396321457 is about 1117.7082861597.

The spelling of 1396321457 in words is "one billion, three hundred ninety-six million, three hundred twenty-one thousand, four hundred fifty-seven".