98939987 has 8 divisors (see below), whose sum is σ = 101212272. Its totient is φ = 96688800.

The previous prime is 98939959. The next prime is 98939999. The reversal of 98939987 is 78993989.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98939987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98939927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4412 + ... + 14742.

It is an arithmetic number, because the mean of its divisors is an integer number (12651534).

Almost surely, 2^98939987 is an apocalyptic number.

98939987 is a deficient number, since it is larger than the sum of its proper divisors (2272285).

98939987 is a wasteful number, since it uses less digits than its factorization.

98939987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10549.

The product of its digits is 8817984, while the sum is 62.

The square root of 98939987 is about 9946.8581471739. The cubic root of 98939987 is about 462.5130059162.

The spelling of 98939987 in words is "ninety-eight million, nine hundred thirty-nine thousand, nine hundred eighty-seven".