9954211920 has 80 divisors (see below), whose sum is σ = 30867696960. Its totient is φ = 2653627392.

The previous prime is 9954211919. The next prime is 9954211951. The reversal of 9954211920 is 291124599.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1383372 + ... + 1390548.

It is an arithmetic number, because the mean of its divisors is an integer number (385846212).

Almost surely, 2^9954211920 is an apocalyptic number.

It is an amenable number.

9954211920 is an abundant number, since it is smaller than the sum of its proper divisors (20913485040).

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

9954211920 is a wasteful number, since it uses less digits than its factorization.

9954211920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12972 (or 12966 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 9954211920 is about 99770.7969297630. The cubic root of 9954211920 is about 2151.1414108766.

The spelling of 9954211920 in words is "nine billion, nine hundred fifty-four million, two hundred eleven thousand, nine hundred twenty".