9421386909 has 16 divisors (see below), whose sum is σ = 13730783040. Its totient is φ = 5698703360.

The previous prime is 9421386899. The next prime is 9421386929. The reversal of 9421386909 is 9096831249.

It is a cyclic number.

It is not a de Polignac number, because 9421386909 - 2¹⁶ = 9421321373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9421386929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263652 + ... + 297245.

It is an arithmetic number, because the mean of its divisors is an integer number (858173940).

Almost surely, 2^9421386909 is an apocalyptic number.

It is an amenable number.

9421386909 is a deficient number, since it is larger than the sum of its proper divisors (4309396131).

9421386909 is a wasteful number, since it uses less digits than its factorization.

9421386909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561420.

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 9421386909 is about 97063.8290456337. The cubic root of 9421386909 is about 2112.0536528550.

The spelling of 9421386909 in words is "nine billion, four hundred twenty-one million, three hundred eighty-six thousand, nine hundred nine".