1439424001 has 4 divisors (see below), whose sum is σ = 1459142212. Its totient is φ = 1419705792.

The previous prime is 1439423989. The next prime is 1439424029. The reversal of 1439424001 is 1004249341.

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

It can be written as a sum of positive squares in 2 ways, for example, as 345402225 + 1094021776 = 18585^2 + 33076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1439424001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1439424071) 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, 9858996 + ... + 9859141.

It is an arithmetic number, because the mean of its divisors is an integer number (364785553).

Almost surely, 2^1439424001 is an apocalyptic number.

It is an amenable number.

1439424001 is a deficient number, since it is larger than the sum of its proper divisors (19718211).

1439424001 is an equidigital number, since it uses as much as digits as its factorization.

1439424001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19718210.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1439424001 is about 37939.7417097165. The cubic root of 1439424001 is about 1129.0926490742.

The spelling of 1439424001 in words is "one billion, four hundred thirty-nine million, four hundred twenty-four thousand, one".