1149945 has 16 divisors (see below), whose sum is σ = 1900032. Its totient is φ = 593280.

The previous prime is 1149943. The next prime is 1149971. The reversal of 1149945 is 5499411.

It is not a de Polignac number, because 1149945 - 2¹ = 1149943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1149943) 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, 772 + ... + 1701.

It is an arithmetic number, because the mean of its divisors is an integer number (118752).

2^1149945 is an apocalyptic number.

1149945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1149945 is a deficient number, since it is larger than the sum of its proper divisors (750087).

1149945 is a wasteful number, since it uses less digits than its factorization.

1149945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512.

The product of its digits is 6480, while the sum is 33.

The square root of 1149945 is about 1072.3548852875. The cubic root of 1149945 is about 104.7672850608.

The spelling of 1149945 in words is "one million, one hundred forty-nine thousand, nine hundred forty-five".