1393081 has 4 divisors (see below), whose sum is σ = 1399552. Its totient is φ = 1386612.

The previous prime is 1393079. The next prime is 1393097. The reversal of 1393081 is 1803931.

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: 1803931 = 757 ⋅2383.

It is a cyclic number.

It is not a de Polignac number, because 1393081 - 2¹ = 1393079 is a prime.

It is a super-2 number, since 2×1393081² = 3881349345122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1393181) 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, 2901 + ... + 3346.

It is an arithmetic number, because the mean of its divisors is an integer number (349888).

2^1393081 is an apocalyptic number.

It is an amenable number.

1393081 is a deficient number, since it is larger than the sum of its proper divisors (6471).

1393081 is an equidigital number, since it uses as much as digits as its factorization.

1393081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6470.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1393081 is about 1180.2885240483. The cubic root of 1393081 is about 111.6842990894.

The spelling of 1393081 in words is "one million, three hundred ninety-three thousand, eighty-one".