1391115 has 16 divisors (see below), whose sum is σ = 2428416. Its totient is φ = 674400.

The previous prime is 1391113. The next prime is 1391119. The reversal of 1391115 is 5111931.

It is not a de Polignac number, because 1391115 - 2¹ = 1391113 is a prime.

It is a super-3 number, since 3×1391115³ = 8076261180403337625, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1391091 and 1391100.

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 15 ways as a sum of consecutive naturals, for example, 4051 + ... + 4380.

It is an arithmetic number, because the mean of its divisors is an integer number (151776).

2^1391115 is an apocalyptic number.

1391115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1391115 is a deficient number, since it is larger than the sum of its proper divisors (1037301).

1391115 is a wasteful number, since it uses less digits than its factorization.

1391115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8450.

The product of its digits is 135, while the sum is 21.

The square root of 1391115 is about 1179.4553827933. The cubic root of 1391115 is about 111.6317358132.

The spelling of 1391115 in words is "one million, three hundred ninety-one thousand, one hundred fifteen".