1009009639 has 8 divisors (see below), whose sum is σ = 1101009168. Its totient is φ = 917055360.

The previous prime is 1009009637. The next prime is 1009009691. The reversal of 1009009639 is 9369009001.

1009009639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1009009639 - 2¹ = 1009009637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1009009598 and 1009009607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009009637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49609 + ... + 66925.

It is an arithmetic number, because the mean of its divisors is an integer number (137626146).

Almost surely, 2^1009009639 is an apocalyptic number.

1009009639 is a deficient number, since it is larger than the sum of its proper divisors (91999529).

1009009639 is a wasteful number, since it uses less digits than its factorization.

1009009639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22625.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 1009009639 is about 31764.9120729147. The cubic root of 1009009639 is about 1002.9942385870.

The spelling of 1009009639 in words is "one billion, nine million, nine thousand, six hundred thirty-nine".