867432909 has 12 divisors (see below), whose sum is σ = 1322008224. Its totient is φ = 495598824.

The previous prime is 867432887. The next prime is 867432911. The reversal of 867432909 is 909234768.

It is not a de Polignac number, because 867432909 - 2⁷ = 867432781 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867432919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131754 + ... + 138180.

It is an arithmetic number, because the mean of its divisors is an integer number (110167352).

Almost surely, 2^867432909 is an apocalyptic number.

It is an amenable number.

867432909 is a deficient number, since it is larger than the sum of its proper divisors (454575315).

867432909 is an frugal number, since it uses more digits than its factorization.

867432909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12864 (or 6437 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 867432909 is about 29452.2139914812. The cubic root of 867432909 is about 953.7004001444.

The spelling of 867432909 in words is "eight hundred sixty-seven million, four hundred thirty-two thousand, nine hundred nine".