936868909 has 4 divisors (see below), whose sum is σ = 937319904. Its totient is φ = 936417916.

The previous prime is 936868903. The next prime is 936868921. The reversal of 936868909 is 909868639.

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 a cyclic number.

It is not a de Polignac number, because 936868909 - 2¹⁹ = 936344621 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 (936868903) 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, 222367 + ... + 226540.

It is an arithmetic number, because the mean of its divisors is an integer number (234329976).

Almost surely, 2^936868909 is an apocalyptic number.

It is an amenable number.

936868909 is a deficient number, since it is larger than the sum of its proper divisors (450995).

936868909 is a wasteful number, since it uses less digits than its factorization.

936868909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450994.

The product of its (nonzero) digits is 5038848, while the sum is 58.

The square root of 936868909 is about 30608.3143769793. The cubic root of 936868909 is about 978.4972487524.

The spelling of 936868909 in words is "nine hundred thirty-six million, eight hundred sixty-eight thousand, nine hundred nine".