4420126666 has 4 divisors (see below), whose sum is σ = 6630190002. Its totient is φ = 2210063332.

The previous prime is 4420126643. The next prime is 4420126679. The reversal of 4420126666 is 6666210244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2587858641 + 1832268025 = 50871^2 + 42805^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105031665 + ... + 1105031668.

Almost surely, 2^4420126666 is an apocalyptic number.

4420126666 is a deficient number, since it is larger than the sum of its proper divisors (2210063336).

4420126666 is a wasteful number, since it uses less digits than its factorization.

4420126666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2210063335.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 4420126666 is about 66484.0331658662. The cubic root of 4420126666 is about 1641.1372572411.

The spelling of 4420126666 in words is "four billion, four hundred twenty million, one hundred twenty-six thousand, six hundred sixty-six".