863796909 has 4 divisors (see below), whose sum is σ = 1151729216. Its totient is φ = 575864604.

The previous prime is 863796893. The next prime is 863796917. The reversal of 863796909 is 909697368.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 863796909 - 2⁴ = 863796893 is a prime.

It is a super-2 number, since 2×863796909² = 1492290199995908562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863796949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143966149 + ... + 143966154.

It is an arithmetic number, because the mean of its divisors is an integer number (287932304).

Almost surely, 2^863796909 is an apocalyptic number.

It is an amenable number.

863796909 is a deficient number, since it is larger than the sum of its proper divisors (287932307).

863796909 is a wasteful number, since it uses less digits than its factorization.

863796909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287932306.

The product of its (nonzero) digits is 4408992, while the sum is 57.

The square root of 863796909 is about 29390.4220622978. The cubic root of 863796909 is about 952.3659987433.

The spelling of 863796909 in words is "eight hundred sixty-three million, seven hundred ninety-six thousand, nine hundred nine".