8390429520 has 80 divisors (see below), whose sum is σ = 28374916032. Its totient is φ = 2034042880.

The previous prime is 8390429513. The next prime is 8390429533. The reversal of 8390429520 is 259240938.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1586457 + ... + 1591736.

Almost surely, 2^8390429520 is an apocalyptic number.

8390429520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8390429520 is an abundant number, since it is smaller than the sum of its proper divisors (19984486512).

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

8390429520 is a wasteful number, since it uses less digits than its factorization.

8390429520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178220 (or 3178214 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 8390429520 is about 91599.2877701568. The cubic root of 8390429520 is about 2032.0204042943.

The spelling of 8390429520 in words is "eight billion, three hundred ninety million, four hundred twenty-nine thousand, five hundred twenty".