1391741 has 4 divisors (see below), whose sum is σ = 1498812. Its totient is φ = 1284672.

The previous prime is 1391729. The next prime is 1391779. The reversal of 1391741 is 1471931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1471931 = 23 ⋅63997.

It can be written as a sum of positive squares in 2 ways, for example, as 448900 + 942841 = 670^2 + 971^2 .

It is a cyclic number.

It is not a de Polignac number, because 1391741 - 2¹⁴ = 1375357 is a prime.

It is a super-2 number, since 2×1391741² = 3873886022162, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1391741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53516 + ... + 53541.

It is an arithmetic number, because the mean of its divisors is an integer number (374703).

2^1391741 is an apocalyptic number.

It is an amenable number.

1391741 is a deficient number, since it is larger than the sum of its proper divisors (107071).

1391741 is a wasteful number, since it uses less digits than its factorization.

1391741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107070.

The product of its digits is 756, while the sum is 26.

The square root of 1391741 is about 1179.7207296644. The cubic root of 1391741 is about 111.6484780157.

The spelling of 1391741 in words is "one million, three hundred ninety-one thousand, seven hundred forty-one".