9949719420 has 72 divisors (see below), whose sum is σ = 30195962160. Its totient is φ = 2651927040.

The previous prime is 9949719397. The next prime is 9949719427. The reversal of 9949719420 is 249179499.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9949719427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376191 + ... + 401769.

Almost surely, 2^9949719420 is an apocalyptic number.

9949719420 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9949719420 is an abundant number, since it is smaller than the sum of its proper divisors (20246242740).

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

9949719420 is a wasteful number, since it uses less digits than its factorization.

9949719420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27755 (or 27750 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 9949719420 is about 99748.2802859277. The cubic root of 9949719420 is about 2150.8177469820.

The spelling of 9949719420 in words is "nine billion, nine hundred forty-nine million, seven hundred nineteen thousand, four hundred twenty".