99142777 has 2 divisors, whose sum is σ = 99142778. Its totient is φ = 99142776.

The previous prime is 99142739. The next prime is 99142789. The reversal of 99142777 is 77724199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93624976 + 5517801 = 9676^2 + 2349^2 .

It is a cyclic number.

It is not a de Polignac number, because 99142777 - 2¹¹ = 99140729 is a prime.

It is not a weakly prime, because it can be changed into another prime (99142717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49571388 + 49571389.

It is an arithmetic number, because the mean of its divisors is an integer number (49571389).

Almost surely, 2^99142777 is an apocalyptic number.

It is an amenable number.

99142777 is a deficient number, since it is larger than the sum of its proper divisors (1).

99142777 is an equidigital number, since it uses as much as digits as its factorization.

99142777 is an odious number, because the sum of its binary digits is odd.

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

The square root of 99142777 is about 9957.0466002726. The cubic root of 99142777 is about 462.8287832137.

The spelling of 99142777 in words is "ninety-nine million, one hundred forty-two thousand, seven hundred seventy-seven".