9399221977 has 4 divisors (see below), whose sum is σ = 9413750016. Its totient is φ = 9384693940.

The previous prime is 9399221969. The next prime is 9399222011. The reversal of 9399221977 is 7791229939.

It is a happy number.

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 9399221977 - 2³ = 9399221969 is a prime.

It is a super-3 number, since 3×9399221977³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9399221957) 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, 7263049 + ... + 7264342.

It is an arithmetic number, because the mean of its divisors is an integer number (2353437504).

Almost surely, 2^9399221977 is an apocalyptic number.

It is an amenable number.

9399221977 is a deficient number, since it is larger than the sum of its proper divisors (14528039).

9399221977 is a wasteful number, since it uses less digits than its factorization.

9399221977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14528038.

The product of its digits is 3857868, while the sum is 58.

The square root of 9399221977 is about 96949.5847180379. The cubic root of 9399221977 is about 2110.3960665722.

The spelling of 9399221977 in words is "nine billion, three hundred ninety-nine million, two hundred twenty-one thousand, nine hundred seventy-seven".