9400661712 has 400 divisors, whose sum is σ = 31054679040. Its totient is φ = 2724710400.

The previous prime is 9400661707. The next prime is 9400661723. The reversal of 9400661712 is 2171660049.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 21413589 + ... + 21414027.

Almost surely, 2^9400661712 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 9400661712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15527339520).

9400661712 is an abundant number, since it is smaller than the sum of its proper divisors (21654017328).

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

9400661712 is a wasteful number, since it uses less digits than its factorization.

9400661712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 9400661712 is about 96957.0096073512. The cubic root of 9400661712 is about 2110.5038150634.

The spelling of 9400661712 in words is "nine billion, four hundred million, six hundred sixty-one thousand, seven hundred twelve".