1396993 has 8 divisors (see below), whose sum is σ = 1541736. Its totient is φ = 1257600.

The previous prime is 1396991. The next prime is 1396999. The reversal of 1396993 is 3996931.

It can be written as a sum of positive squares in 4 ways, for example, as 11664 + 1385329 = 108^2 + 1177^2 .

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 1396993 - 2¹ = 1396991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1396991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778 + ... + 1843.

It is an arithmetic number, because the mean of its divisors is an integer number (192717).

2^1396993 is an apocalyptic number.

1396993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1396993 is a deficient number, since it is larger than the sum of its proper divisors (144743).

1396993 is a wasteful number, since it uses less digits than its factorization.

1396993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675.

The product of its digits is 39366, while the sum is 40.

The square root of 1396993 is about 1181.9445841494. The cubic root of 1396993 is about 111.7887439958.

The spelling of 1396993 in words is "one million, three hundred ninety-six thousand, nine hundred ninety-three".