99738857 has 4 divisors (see below), whose sum is σ = 100035156. Its totient is φ = 99442560.

The previous prime is 99738827. The next prime is 99738869. The reversal of 99738857 is 75883799.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74978281 + 24760576 = 8659^2 + 4976^2 .

It is a cyclic number.

It is not a de Polignac number, because 99738857 - 2¹⁴ = 99722473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99738827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147644 + ... + 148317.

It is an arithmetic number, because the mean of its divisors is an integer number (25008789).

Almost surely, 2^99738857 is an apocalyptic number.

It is an amenable number.

99738857 is a deficient number, since it is larger than the sum of its proper divisors (296299).

99738857 is a wasteful number, since it uses less digits than its factorization.

99738857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296298.

The product of its digits is 3810240, while the sum is 56.

The square root of 99738857 is about 9986.9343143930. The cubic root of 99738857 is about 463.7544916656.

The spelling of 99738857 in words is "ninety-nine million, seven hundred thirty-eight thousand, eight hundred fifty-seven".