1439426973 has 16 divisors (see below), whose sum is σ = 1930233600. Its totient is φ = 954132480.

The previous prime is 1439426969. The next prime is 1439426981. The reversal of 1439426973 is 3796249341.

It is a happy number.

It is not a de Polignac number, because 1439426973 - 2² = 1439426969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1439426773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665013 + ... + 667173.

It is an arithmetic number, because the mean of its divisors is an integer number (120639600).

Almost surely, 2^1439426973 is an apocalyptic number.

It is an amenable number.

1439426973 is a deficient number, since it is larger than the sum of its proper divisors (490806627).

1439426973 is a wasteful number, since it uses less digits than its factorization.

1439426973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332.

The product of its digits is 979776, while the sum is 48.

The square root of 1439426973 is about 37939.7808770689. The cubic root of 1439426973 is about 1129.0934261584.

The spelling of 1439426973 in words is "one billion, four hundred thirty-nine million, four hundred twenty-six thousand, nine hundred seventy-three".