1379643 has 8 divisors (see below), whose sum is σ = 1874448. Its totient is φ = 902304.

The previous prime is 1379641. The next prime is 1379657. The reversal of 1379643 is 3469731.

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

It is not a de Polignac number, because 1379643 - 2¹ = 1379641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379641) by changing a digit.

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, 4180 + ... + 4497.

It is an arithmetic number, because the mean of its divisors is an integer number (234306).

2^1379643 is an apocalyptic number.

1379643 is a deficient number, since it is larger than the sum of its proper divisors (494805).

1379643 is an equidigital number, since it uses as much as digits as its factorization.

1379643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8733.

The product of its digits is 13608, while the sum is 33.

The square root of 1379643 is about 1174.5820533279. The cubic root of 1379643 is about 111.3240268156.

The spelling of 1379643 in words is "one million, three hundred seventy-nine thousand, six hundred forty-three".