9213788077 has 4 divisors (see below), whose sum is σ = 9922541020. Its totient is φ = 8505035136.

The previous prime is 9213788053. The next prime is 9213788093. The reversal of 9213788077 is 7708873129.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7708873129 = 11933 ⋅646013.

It can be written as a sum of positive squares in 2 ways, for example, as 5743517796 + 3470270281 = 75786^2 + 58909^2 .

It is not a de Polignac number, because 9213788077 - 2⁷ = 9213787949 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 (9213788377) 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, 354376452 + ... + 354376477.

It is an arithmetic number, because the mean of its divisors is an integer number (2480635255).

Almost surely, 2^9213788077 is an apocalyptic number.

It is an amenable number.

9213788077 is a deficient number, since it is larger than the sum of its proper divisors (708752943).

9213788077 is a wasteful number, since it uses less digits than its factorization.

9213788077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708752942.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 9213788077 is about 95988.4788763735. The cubic root of 9213788077 is about 2096.4253682029.

The spelling of 9213788077 in words is "nine billion, two hundred thirteen million, seven hundred eighty-eight thousand, seventy-seven".