9420849840 has 80 divisors (see below), whose sum is σ = 29434687488. Its totient is φ = 2492437248.

The previous prime is 9420849827. The next prime is 9420849853. The reversal of 9420849840 is 489480249.

It is an interprime number because it is at equal distance from previous prime (9420849827) and next prime (9420849853).

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

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 9420849840.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124062 + ... + 185021.

Almost surely, 2^9420849840 is an apocalyptic number.

It is an amenable number.

9420849840 is an abundant number, since it is smaller than the sum of its proper divisors (20013837648).

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

9420849840 is a wasteful number, since it uses less digits than its factorization.

9420849840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309226 (or 309220 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 9420849840 is about 97061.0624297921. The cubic root of 9420849840 is about 2112.0135193407.

The spelling of 9420849840 in words is "nine billion, four hundred twenty million, eight hundred forty-nine thousand, eight hundred forty".