8429503644 has 36 divisors (see below), whose sum is σ = 21313994520. Its totient is φ = 2809032480.

The previous prime is 8429503597. The next prime is 8429503673. The reversal of 8429503644 is 4463059248.

8429503644 is a `hidden beast` number, since 84 + 2 + 9 + 503 + 64 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 8429503644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101959 + ... + 165089.

Almost surely, 2^8429503644 is an apocalyptic number.

It is an amenable number.

8429503644 is an abundant number, since it is smaller than the sum of its proper divisors (12884490876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8429503644 is a wasteful number, since it uses less digits than its factorization.

8429503644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66850 (or 66845 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The square root of 8429503644 is about 91812.3283878587. The cubic root of 8429503644 is about 2035.1698847402.

The spelling of 8429503644 in words is "eight billion, four hundred twenty-nine million, five hundred three thousand, six hundred forty-four".