99917140 has 24 divisors (see below), whose sum is σ = 210300552. Its totient is φ = 39876480.

The previous prime is 99917101. The next prime is 99917189. The reversal of 99917140 is 4171999.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 595984 + 99321156 = 772^2 + 9966^2 .

It is a junction number, because it is equal to n+sod(n) for n = 99917093 and 99917102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3802 + ... + 14638.

It is an arithmetic number, because the mean of its divisors is an integer number (8762523).

Almost surely, 2^99917140 is an apocalyptic number.

It is an amenable number.

99917140 is an abundant number, since it is smaller than the sum of its proper divisors (110383412).

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

99917140 is a wasteful number, since it uses less digits than its factorization.

99917140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11307 (or 11305 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 99917140 is about 9995.8561414218. The cubic root of 99917140 is about 464.0306472524.

The spelling of 99917140 in words is "ninety-nine million, nine hundred seventeen thousand, one hundred forty".