9409936666 has 16 divisors (see below), whose sum is σ = 15408898344. Its totient is φ = 4283553024.

The previous prime is 9409936651. The next prime is 9409936703. The reversal of 9409936666 is 6666399049.

It can be written as a sum of positive squares in 4 ways, for example, as 8860268641 + 549668025 = 94129^2 + 23445^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9409936666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2477011 + ... + 2480806.

Almost surely, 2^9409936666 is an apocalyptic number.

9409936666 is a deficient number, since it is larger than the sum of its proper divisors (5998961678).

9409936666 is a wasteful number, since it uses less digits than its factorization.

9409936666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4957905.

The product of its (nonzero) digits is 11337408, while the sum is 58.

The square root of 9409936666 is about 97004.8280551025. The cubic root of 9409936666 is about 2111.1976808159.

The spelling of 9409936666 in words is "nine billion, four hundred nine million, nine hundred thirty-six thousand, six hundred sixty-six".