1222465989 has 8 divisors (see below), whose sum is σ = 1636297920. Its totient is φ = 811805696.

The previous prime is 1222465973. The next prime is 1222466009. The reversal of 1222465989 is 9895642221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222465989 - 2⁴ = 1222465973 is a prime.

It is a super-3 number, since 3×1222465989³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222465919) 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, 792009 + ... + 793550.

It is an arithmetic number, because the mean of its divisors is an integer number (204537240).

Almost surely, 2^1222465989 is an apocalyptic number.

It is an amenable number.

1222465989 is a deficient number, since it is larger than the sum of its proper divisors (413831931).

1222465989 is a wasteful number, since it uses less digits than its factorization.

1222465989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585819.

The product of its digits is 622080, while the sum is 48.

The square root of 1222465989 is about 34963.7811027354. The cubic root of 1222465989 is about 1069.2491862107.

The spelling of 1222465989 in words is "one billion, two hundred twenty-two million, four hundred sixty-five thousand, nine hundred eighty-nine".