8942772497 has 4 divisors (see below), whose sum is σ = 9468817956. Its totient is φ = 8416727040.

The previous prime is 8942772481. The next prime is 8942772499. The reversal of 8942772497 is 7942772498.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7942772498 = 2 ⋅3971386249.

It can be written as a sum of positive squares in 2 ways, for example, as 3281112961 + 5661659536 = 57281^2 + 75244^2 .

It is a cyclic number.

It is not a de Polignac number, because 8942772497 - 2⁴ = 8942772481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8942772499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263022704 + ... + 263022737.

It is an arithmetic number, because the mean of its divisors is an integer number (2367204489).

Almost surely, 2^8942772497 is an apocalyptic number.

It is an amenable number.

8942772497 is a deficient number, since it is larger than the sum of its proper divisors (526045459).

8942772497 is a wasteful number, since it uses less digits than its factorization.

8942772497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526045458.

The product of its digits is 14224896, while the sum is 59.

The square root of 8942772497 is about 94566.2333869759. The cubic root of 8942772497 is about 2075.6656303195.

Subtracting from 8942772497 its reverse (7942772498), we obtain a palindrome (999999999).

The spelling of 8942772497 in words is "eight billion, nine hundred forty-two million, seven hundred seventy-two thousand, four hundred ninety-seven".