99987430 has 8 divisors (see below), whose sum is σ = 179977392. Its totient is φ = 39994968.

The previous prime is 99987373. The next prime is 99987449. The reversal of 99987430 is 3478999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4999362 + ... + 4999381.

It is an arithmetic number, because the mean of its divisors is an integer number (22497174).

Almost surely, 2^99987430 is an apocalyptic number.

99987430 is a deficient number, since it is larger than the sum of its proper divisors (79989962).

99987430 is a wasteful number, since it uses less digits than its factorization.

99987430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9998750.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 99987430 is about 9999.3714802481. The cubic root of 99987430 is about 464.1394342891.

The spelling of 99987430 in words is "ninety-nine million, nine hundred eighty-seven thousand, four hundred thirty".