8446666402 has 4 divisors (see below), whose sum is σ = 12669999606. Its totient is φ = 4223333200.

The previous prime is 8446666309. The next prime is 8446666433. The reversal of 8446666402 is 2046666448.

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., 6136998921 + 2309667481 = 78339^2 + 48059^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2111666599 + ... + 2111666602.

Almost surely, 2^8446666402 is an apocalyptic number.

8446666402 is a deficient number, since it is larger than the sum of its proper divisors (4223333204).

8446666402 is a wasteful number, since it uses less digits than its factorization.

8446666402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4223333203.

The product of its (nonzero) digits is 1327104, while the sum is 46.

The square root of 8446666402 is about 91905.7473828487. The cubic root of 8446666402 is about 2036.5501735780.

Adding to 8446666402 its sum of digits (46), we get a palindrome (8446666448).

The spelling of 8446666402 in words is "eight billion, four hundred forty-six million, six hundred sixty-six thousand, four hundred two".