1009209047 has 24 divisors (see below), whose sum is σ = 1287539712. Its totient is φ = 782199600.

The previous prime is 1009209017. The next prime is 1009209059. The reversal of 1009209047 is 7409029001.

It is not a de Polignac number, because 1009209047 - 2¹⁰ = 1009208023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009209017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98048 + ... + 107850.

It is an arithmetic number, because the mean of its divisors is an integer number (53647488).

Almost surely, 2^1009209047 is an apocalyptic number.

1009209047 is a deficient number, since it is larger than the sum of its proper divisors (278330665).

1009209047 is a wasteful number, since it uses less digits than its factorization.

1009209047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10019 (or 10012 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 1009209047 is about 31768.0507271063. The cubic root of 1009209047 is about 1003.0603072988.

The spelling of 1009209047 in words is "one billion, nine million, two hundred nine thousand, forty-seven".