8646489401 has 4 divisors (see below), whose sum is σ = 9432533904. Its totient is φ = 7860444900.

The previous prime is 8646489367. The next prime is 8646489409. The reversal of 8646489401 is 1049846468.

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 de Polignac number, because none of the positive numbers 2^k-8646489401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8646489401.

It is not an unprimeable number, because it can be changed into a prime (8646489409) 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, 393022235 + ... + 393022256.

It is an arithmetic number, because the mean of its divisors is an integer number (2358133476).

Almost surely, 2^8646489401 is an apocalyptic number.

It is an amenable number.

8646489401 is a deficient number, since it is larger than the sum of its proper divisors (786044503).

8646489401 is a wasteful number, since it uses less digits than its factorization.

8646489401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786044502.

The product of its (nonzero) digits is 1327104, while the sum is 50.

The square root of 8646489401 is about 92986.5011762460. The cubic root of 8646489401 is about 2052.4847444645.

The spelling of 8646489401 in words is "eight billion, six hundred forty-six million, four hundred eighty-nine thousand, four hundred one".