1439897445 has 32 divisors (see below), whose sum is σ = 2925507840. Its totient is φ = 658238400.

The previous prime is 1439897443. The next prime is 1439897449. The reversal of 1439897445 is 5447989341.

It is not a de Polignac number, because 1439897445 - 2¹ = 1439897443 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1439897391 and 1439897400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1439897443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 760906 + ... + 762795.

It is an arithmetic number, because the mean of its divisors is an integer number (91422120).

Almost surely, 2^1439897445 is an apocalyptic number.

1439897445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1439897445 is an abundant number, since it is smaller than the sum of its proper divisors (1485610395).

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

1439897445 is a wasteful number, since it uses less digits than its factorization.

1439897445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523722 (or 1523716 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 1439897445 is about 37945.9806171879. The cubic root of 1439897445 is about 1129.2164262569.

The spelling of 1439897445 in words is "one billion, four hundred thirty-nine million, eight hundred ninety-seven thousand, four hundred forty-five".