100638199 has 4 divisors (see below), whose sum is σ = 101039400. Its totient is φ = 100237000.

The previous prime is 100638191. The next prime is 100638217. The reversal of 100638199 is 991836001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100638199 - 2³ = 100638191 is a prime.

It is a super-4 number, since 4×100638199⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100638191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200224 + ... + 200725.

It is an arithmetic number, because the mean of its divisors is an integer number (25259850).

Almost surely, 2^100638199 is an apocalyptic number.

100638199 is a deficient number, since it is larger than the sum of its proper divisors (401201).

100638199 is an equidigital number, since it uses as much as digits as its factorization.

100638199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401200.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 100638199 is about 10031.8591995701. The cubic root of 100638199 is about 465.1442093284.

The spelling of 100638199 in words is "one hundred million, six hundred thirty-eight thousand, one hundred ninety-nine".