1391117 has 8 divisors (see below), whose sum is σ = 1712256. Its totient is φ = 1100592.

The previous prime is 1391113. The next prime is 1391119. The reversal of 1391117 is 7111931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1391117 - 2² = 1391113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1391092 and 1391101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7553 + ... + 7734.

It is an arithmetic number, because the mean of its divisors is an integer number (214032).

2^1391117 is an apocalyptic number.

It is an amenable number.

1391117 is a deficient number, since it is larger than the sum of its proper divisors (321139).

1391117 is a wasteful number, since it uses less digits than its factorization.

1391117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15307.

The product of its digits is 189, while the sum is 23.

The square root of 1391117 is about 1179.4562306419. The cubic root of 1391117 is about 111.6317893107.

The spelling of 1391117 in words is "one million, three hundred ninety-one thousand, one hundred seventeen".