1159440 has 40 divisors (see below), whose sum is σ = 3595008. Its totient is φ = 309120.

The previous prime is 1159429. The next prime is 1159447. The reversal of 1159440 is 449511.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1159440² = 2688602227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1159440.

It is not an unprimeable number, because it can be changed into a prime (1159447) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2176 + ... + 2655.

2^1159440 is an apocalyptic number.

1159440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1159440 is an abundant number, since it is smaller than the sum of its proper divisors (2435568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1159440 is a wasteful number, since it uses less digits than its factorization.

1159440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4847 (or 4841 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1159440 is about 1076.7729565698. The cubic root of 1159440 is about 105.0548466294.

The spelling of 1159440 in words is "one million, one hundred fifty-nine thousand, four hundred forty".