99124777 has 2 divisors, whose sum is σ = 99124778. Its totient is φ = 99124776.

The previous prime is 99124769. The next prime is 99124789. The reversal of 99124777 is 77742199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98783721 + 341056 = 9939^2 + 584^2 .

It is a cyclic number.

It is not a de Polignac number, because 99124777 - 2³ = 99124769 is a prime.

It is not a weakly prime, because it can be changed into another prime (99124477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49562388 + 49562389.

It is an arithmetic number, because the mean of its divisors is an integer number (49562389).

Almost surely, 2^99124777 is an apocalyptic number.

It is an amenable number.

99124777 is a deficient number, since it is larger than the sum of its proper divisors (1).

99124777 is an equidigital number, since it uses as much as digits as its factorization.

99124777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264, while the sum is 46.

The square root of 99124777 is about 9956.1426767599. The cubic root of 99124777 is about 462.8007716847.

The spelling of 99124777 in words is "ninety-nine million, one hundred twenty-four thousand, seven hundred seventy-seven".