100013947 has 4 divisors (see below), whose sum is σ = 109106136. Its totient is φ = 90921760.

The previous prime is 100013911. The next prime is 100013987. The reversal of 100013947 is 749310001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749310001 = 11 ⋅68119091.

It is a cyclic number.

It is not a de Polignac number, because 100013947 - 2¹⁵ = 99981179 is a prime.

It is a Duffinian number.

100013947 is a modest number, since divided by 13947 gives 10 as remainder.

It is not an unprimeable number, because it can be changed into a prime (100013987) 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, 4546078 + ... + 4546099.

It is an arithmetic number, because the mean of its divisors is an integer number (27276534).

Almost surely, 2^100013947 is an apocalyptic number.

100013947 is a deficient number, since it is larger than the sum of its proper divisors (9092189).

100013947 is an equidigital number, since it uses as much as digits as its factorization.

100013947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9092188.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 100013947 is about 10000.6973256868. The cubic root of 100013947 is about 464.1804611046.

Adding to 100013947 its reverse (749310001), we get a palindrome (849323948).

The spelling of 100013947 in words is "one hundred million, thirteen thousand, nine hundred forty-seven".