1440941091 has 4 divisors (see below), whose sum is σ = 1921254792. Its totient is φ = 960627392.

The previous prime is 1440941077. The next prime is 1440941093. The reversal of 1440941091 is 1901490441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1440941091 - 2⁵ = 1440941059 is a prime.

It is a super-2 number, since 2×1440941091² = 4152622455464540562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1440941093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240156846 + ... + 240156851.

It is an arithmetic number, because the mean of its divisors is an integer number (480313698).

Almost surely, 2^1440941091 is an apocalyptic number.

1440941091 is a deficient number, since it is larger than the sum of its proper divisors (480313701).

1440941091 is an equidigital number, since it uses as much as digits as its factorization.

1440941091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480313700.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1440941091 is about 37959.7298594181. The cubic root of 1440941091 is about 1129.4891812360.

The spelling of 1440941091 in words is "one billion, four hundred forty million, nine hundred forty-one thousand, ninety-one".