99881946 has 12 divisors (see below), whose sum is σ = 216410922. Its totient is φ = 33293976.

The previous prime is 99881927. The next prime is 99881959. The reversal of 99881946 is 64918899.

It can be written as a sum of positive squares in only one way, i.e., 69906321 + 29975625 = 8361^2 + 5475^2 .

It is a junction number, because it is equal to n+sod(n) for n = 99881892 and 99881901.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2774481 + ... + 2774516.

Almost surely, 2^99881946 is an apocalyptic number.

99881946 is an abundant number, since it is smaller than the sum of its proper divisors (116528976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99881946 is a wasteful number, since it uses less digits than its factorization.

99881946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5549005 (or 5549002 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 99881946 is about 9994.0955568776. The cubic root of 99881946 is about 463.9761587284.

It can be divided in two parts, 998 and 81946, that added together give a square (82944 = 288²).

The spelling of 99881946 in words is "ninety-nine million, eight hundred eighty-one thousand, nine hundred forty-six".