1379381 has 6 divisors (see below), whose sum is σ = 1456182. Its totient is φ = 1306440.

The previous prime is 1379369. The next prime is 1379383. The reversal of 1379381 is 1839731.

It can be written as a sum of positive squares in only one way, i.e., 1343281 + 36100 = 1159^2 + 190^2 .

It is not a de Polignac number, because 1379381 - 2¹⁴ = 1362997 is a prime.

It is a super-2 number, since 2×1379381² = 3805383886322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379383) 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, 1550 + ... + 2271.

It is an arithmetic number, because the mean of its divisors is an integer number (242697).

2^1379381 is an apocalyptic number.

It is an amenable number.

1379381 is a deficient number, since it is larger than the sum of its proper divisors (76801).

1379381 is an equidigital number, since it uses as much as digits as its factorization.

1379381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859 (or 3840 counting only the distinct ones).

The product of its digits is 4536, while the sum is 32.

The square root of 1379381 is about 1174.4705189999. The cubic root of 1379381 is about 111.3169794027.

The spelling of 1379381 in words is "one million, three hundred seventy-nine thousand, three hundred eighty-one".