99901856 has 12 divisors (see below), whose sum is σ = 196681842. Its totient is φ = 49950912.

The previous prime is 99901853. The next prime is 99901859. The reversal of 99901856 is 65810999.

It is an interprime number because it is at equal distance from previous prime (99901853) and next prime (99901859).

It can be written as a sum of positive squares in only one way, i.e., 78925456 + 20976400 = 8884^2 + 4580^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 99901856.

It is not an unprimeable number, because it can be changed into a prime (99901853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560935 + ... + 1560998.

Almost surely, 2^99901856 is an apocalyptic number.

It is an amenable number.

99901856 is a deficient number, since it is larger than the sum of its proper divisors (96779986).

99901856 is a wasteful number, since it uses less digits than its factorization.

99901856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121943 (or 3121935 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 47.

The square root of 99901856 is about 9995.0915953782. The cubic root of 99901856 is about 464.0069856261.

The spelling of 99901856 in words is "ninety-nine million, nine hundred one thousand, eight hundred fifty-six".