100400011 has 4 divisors (see below), whose sum is σ = 106305912. Its totient is φ = 94494112.

The previous prime is 100399973. The next prime is 100400017. The reversal of 100400011 is 110004001.

It is a happy number.

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 100400011 - 2¹⁷ = 100268939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100399967 and 100400003.

It is not an unprimeable number, because it can be changed into a prime (100400017) 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, 2952925 + ... + 2952958.

It is an arithmetic number, because the mean of its divisors is an integer number (26576478).

Almost surely, 2^100400011 is an apocalyptic number.

100400011 is a deficient number, since it is larger than the sum of its proper divisors (5905901).

100400011 is an equidigital number, since it uses as much as digits as its factorization.

100400011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5905900.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 100400011 is about 10019.9805888036. The cubic root of 100400011 is about 464.7769555038.

Adding to 100400011 its reverse (110004001), we get a palindrome (210404012).

The spelling of 100400011 in words is "one hundred million, four hundred thousand, eleven".