99985740 has 24 divisors (see below), whose sum is σ = 279960240. Its totient is φ = 26662848.

The previous prime is 99985727. The next prime is 99985777. The reversal of 99985740 is 4758999.

It is a happy 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, 833155 + ... + 833274.

It is an arithmetic number, because the mean of its divisors is an integer number (11665010).

Almost surely, 2^99985740 is an apocalyptic number.

It is an amenable number.

99985740 is an abundant number, since it is smaller than the sum of its proper divisors (179974500).

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

99985740 is a wasteful number, since it uses less digits than its factorization.

99985740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666441 (or 1666439 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 99985740 is about 9999.2869745797. The cubic root of 99985740 is about 464.1368192935.

The spelling of 99985740 in words is "ninety-nine million, nine hundred eighty-five thousand, seven hundred forty".