1009973439 has 12 divisors (see below), whose sum is σ = 1466411856. Its totient is φ = 669825792.

The previous prime is 1009973431. The next prime is 1009973441. The reversal of 1009973439 is 9343799001.

It is not a de Polignac number, because 1009973439 - 2³ = 1009973431 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1009973394 and 1009973403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009973431) 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 11 ways as a sum of consecutive naturals, for example, 288987 + ... + 292460.

It is an arithmetic number, because the mean of its divisors is an integer number (122200988).

Almost surely, 2^1009973439 is an apocalyptic number.

1009973439 is a deficient number, since it is larger than the sum of its proper divisors (456438417).

1009973439 is a wasteful number, since it uses less digits than its factorization.

1009973439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581646 (or 581643 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 1009973439 is about 31780.0792793221. The cubic root of 1009973439 is about 1003.3134883352.

It can be divided in two parts, 10099 and 73439, that added together give a palindrome (83538).

The spelling of 1009973439 in words is "one billion, nine million, nine hundred seventy-three thousand, four hundred thirty-nine".