98938638 has 16 divisors (see below), whose sum is σ = 219863760. Its totient is φ = 32979528.

The previous prime is 98938613. The next prime is 98938661. The reversal of 98938638 is 83683989.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1832197 = 98938638 / (9 + 8 + 9 + 3 + 8 + 6 + 3 + 8).

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, 916045 + ... + 916152.

It is an arithmetic number, because the mean of its divisors is an integer number (13741485).

Almost surely, 2^98938638 is an apocalyptic number.

98938638 is an abundant number, since it is smaller than the sum of its proper divisors (120925122).

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

98938638 is a wasteful number, since it uses less digits than its factorization.

98938638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832208 (or 1832202 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 98938638 is about 9946.7903365860. The cubic root of 98938638 is about 462.5109038579.

The spelling of 98938638 in words is "ninety-eight million, nine hundred thirty-eight thousand, six hundred thirty-eight".