1149895 has 4 divisors (see below), whose sum is σ = 1379880. Its totient is φ = 919912.

The previous prime is 1149887. The next prime is 1149901. The reversal of 1149895 is 5989411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5989411 = 541 ⋅11071.

It is a cyclic number.

It is not a de Polignac number, because 1149895 - 2³ = 1149887 is a prime.

It is a super-2 number, since 2×1149895² = 2644517022050, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114985 + ... + 114994.

It is an arithmetic number, because the mean of its divisors is an integer number (344970).

2^1149895 is an apocalyptic number.

1149895 is a deficient number, since it is larger than the sum of its proper divisors (229985).

1149895 is an equidigital number, since it uses as much as digits as its factorization.

1149895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229984.

The product of its digits is 12960, while the sum is 37.

The square root of 1149895 is about 1072.3315718564. The cubic root of 1149895 is about 104.7657665997.

It can be divided in two parts, 11 and 49895, that multiplied together give a palindrome (548845).

The spelling of 1149895 in words is "one million, one hundred forty-nine thousand, eight hundred ninety-five".