100699138 has 4 divisors (see below), whose sum is σ = 151048710. Its totient is φ = 50349568.

The previous prime is 100699127. The next prime is 100699147. The reversal of 100699138 is 831996001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831996001 = 347 ⋅2397683.

It can be written as a sum of positive squares in only one way, i.e., 72471169 + 28227969 = 8513^2 + 5313^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100699097 and 100699106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25174783 + ... + 25174786.

Almost surely, 2^100699138 is an apocalyptic number.

100699138 is a deficient number, since it is larger than the sum of its proper divisors (50349572).

100699138 is an equidigital number, since it uses as much as digits as its factorization.

100699138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50349571.

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

The square root of 100699138 is about 10034.8960134124. The cubic root of 100699138 is about 465.2380759513.

The spelling of 100699138 in words is "one hundred million, six hundred ninety-nine thousand, one hundred thirty-eight".