1100004001 has 4 divisors (see below), whose sum is σ = 1101747904. Its totient is φ = 1098260100.

The previous prime is 1100003981. The next prime is 1100004007. The reversal of 1100004001 is 1004000011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1100004001 - 2¹¹ = 1100001953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100004007) 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, 871005 + ... + 872266.

It is an arithmetic number, because the mean of its divisors is an integer number (275436976).

Almost surely, 2^1100004001 is an apocalyptic number.

It is an amenable number.

1100004001 is a deficient number, since it is larger than the sum of its proper divisors (1743903).

1100004001 is an equidigital number, since it uses as much as digits as its factorization.

1100004001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743902.

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

The square root of 1100004001 is about 33166.3082208436. The cubic root of 1100004001 is about 1032.2813670163.

Adding to 1100004001 its reverse (1004000011), we get a palindrome (2104004012).

The spelling of 1100004001 in words is "one billion, one hundred million, four thousand, one".