1379261 has 12 divisors (see below), whose sum is σ = 1592892. Its totient is φ = 1183104.

The previous prime is 1379251. The next prime is 1379263. The reversal of 1379261 is 1629731.

It can be written as a sum of positive squares in 2 ways, for example, as 624100 + 755161 = 790^2 + 869^2 .

It is not a de Polignac number, because 1379261 - 2¹⁸ = 1117117 is a prime.

It is a super-2 number, since 2×1379261² = 3804721812242, 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 (1379263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17420 + ... + 17498.

It is an arithmetic number, because the mean of its divisors is an integer number (132741).

2^1379261 is an apocalyptic number.

It is an amenable number.

1379261 is a deficient number, since it is larger than the sum of its proper divisors (213631).

1379261 is an equidigital number, since it uses as much as digits as its factorization.

1379261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 109 counting only the distinct ones).

The product of its digits is 2268, while the sum is 29.

The square root of 1379261 is about 1174.4194310382. The cubic root of 1379261 is about 111.3137512821.

The spelling of 1379261 in words is "one million, three hundred seventy-nine thousand, two hundred sixty-one".