9943954416 has 160 divisors (see below), whose sum is σ = 31577264640. Its totient is φ = 2970777600.

The previous prime is 9943954409. The next prime is 9943954451. The reversal of 9943954416 is 6144593499.

It is a happy number.

9943954416 is a `hidden beast` number, since 9 + 94 + 3 + 9 + 544 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 322656 + ... + 352128.

It is an arithmetic number, because the mean of its divisors is an integer number (197357904).

Almost surely, 2^9943954416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9943954416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15788632320).

9943954416 is an abundant number, since it is smaller than the sum of its proper divisors (21633310224).

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

9943954416 is a wasteful number, since it uses less digits than its factorization.

9943954416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29572 (or 29560 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The square root of 9943954416 is about 99719.3783374124. The cubic root of 9943954416 is about 2150.4022622844.

The spelling of 9943954416 in words is "nine billion, nine hundred forty-three million, nine hundred fifty-four thousand, four hundred sixteen".