1379644 has 18 divisors (see below), whose sum is σ = 2808960. Its totient is φ = 591192.

The previous prime is 1379641. The next prime is 1379657. The reversal of 1379644 is 4469731.

It is a happy number.

It is a d-powerful number, because it can be written as 1 + 3⁵ + 7⁷ + 9⁶ + 6⁵ + 4⁴ + 4⁷ .

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 polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3324 + ... + 3715.

2^1379644 is an apocalyptic number.

1379644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1379644 is an abundant number, since it is smaller than the sum of its proper divisors (1429316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1379644 is a wasteful number, since it uses less digits than its factorization.

1379644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7057 (or 7048 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The square root of 1379644 is about 1174.5824790112. The cubic root of 1379644 is about 111.3240537124.

The spelling of 1379644 in words is "one million, three hundred seventy-nine thousand, six hundred forty-four".