8499218401 has 4 divisors (see below), whose sum is σ = 8537331712. Its totient is φ = 8461105092.

The previous prime is 8499218353. The next prime is 8499218411. The reversal of 8499218401 is 1048129948.

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 not a de Polignac number, because 8499218401 - 2²⁷ = 8365000673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8499218411) 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, 19056321 + ... + 19056766.

It is an arithmetic number, because the mean of its divisors is an integer number (2134332928).

Almost surely, 2^8499218401 is an apocalyptic number.

It is an amenable number.

8499218401 is a deficient number, since it is larger than the sum of its proper divisors (38113311).

8499218401 is a wasteful number, since it uses less digits than its factorization.

8499218401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38113310.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 8499218401 is about 92191.2056597591. The cubic root of 8499218401 is about 2040.7649957560.

The spelling of 8499218401 in words is "eight billion, four hundred ninety-nine million, two hundred eighteen thousand, four hundred one".