1147915 has 4 divisors (see below), whose sum is σ = 1377504. Its totient is φ = 918328.

The previous prime is 1147903. The next prime is 1147921. The reversal of 1147915 is 5197411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5197411 = 2039 ⋅2549.

It is a cyclic number.

It is not a de Polignac number, because 1147915 - 2¹⁷ = 1016843 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114787 + ... + 114796.

It is an arithmetic number, because the mean of its divisors is an integer number (344376).

2^1147915 is an apocalyptic number.

1147915 is a deficient number, since it is larger than the sum of its proper divisors (229589).

1147915 is an equidigital number, since it uses as much as digits as its factorization.

1147915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229588.

The product of its digits is 1260, while the sum is 28.

The square root of 1147915 is about 1071.4079521825. The cubic root of 1147915 is about 104.7056001228.

The spelling of 1147915 in words is "one million, one hundred forty-seven thousand, nine hundred fifteen".