1226057689 has 4 divisors (see below), whose sum is σ = 1235417040. Its totient is φ = 1216698340.

The previous prime is 1226057683. The next prime is 1226057699. The reversal of 1226057689 is 9867506221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9867506221 = 26959 ⋅366019.

It is a cyclic number.

It is not a de Polignac number, because 1226057689 - 2⁹ = 1226057177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226057683) 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, 4679479 + ... + 4679740.

It is an arithmetic number, because the mean of its divisors is an integer number (308854260).

Almost surely, 2^1226057689 is an apocalyptic number.

It is an amenable number.

1226057689 is a deficient number, since it is larger than the sum of its proper divisors (9359351).

1226057689 is an equidigital number, since it uses as much as digits as its factorization.

1226057689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9359350.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 1226057689 is about 35015.1065827308. The cubic root of 1226057689 is about 1070.2953413623.

The spelling of 1226057689 in words is "one billion, two hundred twenty-six million, fifty-seven thousand, six hundred eighty-nine".