99420877 has 2 divisors, whose sum is σ = 99420878. Its totient is φ = 99420876.

The previous prime is 99420857. The next prime is 99420889. The reversal of 99420877 is 77802499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99420841 + 36 = 9971^2 + 6^2 .

It is an emirp because it is prime and its reverse (77802499) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99420877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99420847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49710438 + 49710439.

It is an arithmetic number, because the mean of its divisors is an integer number (49710439).

Almost surely, 2^99420877 is an apocalyptic number.

It is an amenable number.

99420877 is a deficient number, since it is larger than the sum of its proper divisors (1).

99420877 is an equidigital number, since it uses as much as digits as its factorization.

99420877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 99420877 is about 9971.0018052350. The cubic root of 99420877 is about 463.2611311446.

The spelling of 99420877 in words is "ninety-nine million, four hundred twenty thousand, eight hundred seventy-seven".