100117477 has 4 divisors (see below), whose sum is σ = 102006540. Its totient is φ = 98228416.

The previous prime is 100117453. The next prime is 100117489. The reversal of 100117477 is 774711001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 774711001 = 23 ⋅33683087.

It can be written as a sum of positive squares in 2 ways, for example, as 36978561 + 63138916 = 6081^2 + 7946^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100117477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100117877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944452 + ... + 944557.

It is an arithmetic number, because the mean of its divisors is an integer number (25501635).

Almost surely, 2^100117477 is an apocalyptic number.

It is an amenable number.

100117477 is a deficient number, since it is larger than the sum of its proper divisors (1889063).

100117477 is an equidigital number, since it uses as much as digits as its factorization.

100117477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889062.

The product of its (nonzero) digits is 1372, while the sum is 28.

The square root of 100117477 is about 10005.8721259069. The cubic root of 100117477 is about 464.3405722094.

Adding to 100117477 its reverse (774711001), we get a palindrome (874828478).

The spelling of 100117477 in words is "one hundred million, one hundred seventeen thousand, four hundred seventy-seven".