1223494689 has 8 divisors (see below), whose sum is σ = 1632385600. Its totient is φ = 815133456.

The previous prime is 1223494687. The next prime is 1223494693. The reversal of 1223494689 is 9864943221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1223494689 - 2¹ = 1223494687 is a prime.

It is a super-2 number, since 2×1223494689² = 2993878508022413442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1223494687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126997 + ... + 136290.

It is an arithmetic number, because the mean of its divisors is an integer number (204048200).

Almost surely, 2^1223494689 is an apocalyptic number.

It is an amenable number.

1223494689 is a deficient number, since it is larger than the sum of its proper divisors (408890911).

1223494689 is a wasteful number, since it uses less digits than its factorization.

1223494689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264839.

The product of its digits is 746496, while the sum is 48.

The square root of 1223494689 is about 34978.4889467798. The cubic root of 1223494689 is about 1069.5490250231.

The spelling of 1223494689 in words is "one billion, two hundred twenty-three million, four hundred ninety-four thousand, six hundred eighty-nine".