1103421689 has 2 divisors, whose sum is σ = 1103421690. Its totient is φ = 1103421688.

The previous prime is 1103421607. The next prime is 1103421691. The reversal of 1103421689 is 9861243011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 931287289 + 172134400 = 30517^2 + 13120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103421689 - 2⁸ = 1103421433 is a prime.

It is a super-2 number, since 2×1103421689² = 2435078847511225442, which contains 22 as substring.

Together with 1103421691, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1103421989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551710844 + 551710845.

It is an arithmetic number, because the mean of its divisors is an integer number (551710845).

Almost surely, 2^1103421689 is an apocalyptic number.

It is an amenable number.

1103421689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103421689 is an equidigital number, since it uses as much as digits as its factorization.

1103421689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1103421689 is about 33217.7917538177. The cubic root of 1103421689 is about 1033.3493534688.

It can be divided in two parts, 11034 and 21689, that added together give a palindrome (32723).

The spelling of 1103421689 in words is "one billion, one hundred three million, four hundred twenty-one thousand, six hundred eighty-nine".