1000011443 has 4 divisors (see below), whose sum is σ = 1024402008. Its totient is φ = 975620880.

The previous prime is 1000011421. The next prime is 1000011479. The reversal of 1000011443 is 3441100001.

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 1000011443 - 2¹² = 1000007347 is a prime.

It is a super-2 number, since 2×1000011443² = 2000045772261884498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000019443) 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, 12195221 + ... + 12195302.

It is an arithmetic number, because the mean of its divisors is an integer number (256100502).

Almost surely, 2^1000011443 is an apocalyptic number.

1000011443 is a deficient number, since it is larger than the sum of its proper divisors (24390565).

1000011443 is an equidigital number, since it uses as much as digits as its factorization.

1000011443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24390564.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1000011443 is about 31622.9575308825. The cubic root of 1000011443 is about 1000.0038143188.

Adding to 1000011443 its reverse (3441100001), we get a palindrome (4441111444).

The spelling of 1000011443 in words is "one billion, eleven thousand, four hundred forty-three".