1441432391 has 4 divisors (see below), whose sum is σ = 1647351312. Its totient is φ = 1235513472.

The previous prime is 1441432357. The next prime is 1441432403. The reversal of 1441432391 is 1932341441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1932341441 = 9547 ⋅202403.

It is a cyclic number.

It is not a de Polignac number, because 1441432391 - 2¹⁴ = 1441416007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1441432591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102959450 + ... + 102959463.

It is an arithmetic number, because the mean of its divisors is an integer number (411837828).

Almost surely, 2^1441432391 is an apocalyptic number.

1441432391 is a deficient number, since it is larger than the sum of its proper divisors (205918921).

1441432391 is an equidigital number, since it uses as much as digits as its factorization.

1441432391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205918920.

The product of its digits is 10368, while the sum is 32.

The square root of 1441432391 is about 37966.2006395162. The cubic root of 1441432391 is about 1129.6175360042.

The spelling of 1441432391 in words is "one billion, four hundred forty-one million, four hundred thirty-two thousand, three hundred ninety-one".