1369281 has 4 divisors (see below), whose sum is σ = 1825712. Its totient is φ = 912852.

The previous prime is 1369243. The next prime is 1369297. The reversal of 1369281 is 1829631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1829631 = 3 ⋅609877.

It is not a de Polignac number, because 1369281 - 2⁶ = 1369217 is a prime.

It is a super-2 number, since 2×1369281² = 3749860913922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1369201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228211 + ... + 228216.

It is an arithmetic number, because the mean of its divisors is an integer number (456428).

2^1369281 is an apocalyptic number.

It is an amenable number.

1369281 is a deficient number, since it is larger than the sum of its proper divisors (456431).

1369281 is an equidigital number, since it uses as much as digits as its factorization.

1369281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456430.

The product of its digits is 2592, while the sum is 30.

The square root of 1369281 is about 1170.1628091851. The cubic root of 1369281 is about 111.0446212939.

The spelling of 1369281 in words is "one million, three hundred sixty-nine thousand, two hundred eighty-one".