99201977 has 16 divisors (see below), whose sum is σ = 114960384. Its totient is φ = 83850000.

The previous prime is 99201943. The next prime is 99202027. The reversal of 99201977 is 77910299.

It is a cyclic number.

It is not a de Polignac number, because 99201977 - 2¹⁰ = 99200953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99201577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229952 + ... + 230382.

It is an arithmetic number, because the mean of its divisors is an integer number (7185024).

Almost surely, 2^99201977 is an apocalyptic number.

It is an amenable number.

99201977 is a deficient number, since it is larger than the sum of its proper divisors (15758407).

99201977 is a wasteful number, since it uses less digits than its factorization.

99201977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820.

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 99201977 is about 9960.0189256848. The cubic root of 99201977 is about 462.9208861150.

The spelling of 99201977 in words is "ninety-nine million, two hundred one thousand, nine hundred seventy-seven".