4001226689 has 4 divisors (see below), whose sum is σ = 4025774256. Its totient is φ = 3976679124.

The previous prime is 4001226631. The next prime is 4001226707. The reversal of 4001226689 is 9866221004.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4001226689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4001226629) 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, 12273539 + ... + 12273864.

It is an arithmetic number, because the mean of its divisors is an integer number (1006443564).

Almost surely, 2^4001226689 is an apocalyptic number.

It is an amenable number.

4001226689 is a deficient number, since it is larger than the sum of its proper divisors (24547567).

4001226689 is a wasteful number, since it uses less digits than its factorization.

4001226689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24547566.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 4001226689 is about 63255.2502880196. The cubic root of 4001226689 is about 1587.5633060005.

The spelling of 4001226689 in words is "four billion, one million, two hundred twenty-six thousand, six hundred eighty-nine".