9721340450 has 12 divisors (see below), whose sum is σ = 18081693330. Its totient is φ = 3888536160.

The previous prime is 9721340423. The next prime is 9721340467. The reversal of 9721340450 is 540431279.

It can be written as a sum of positive squares in 3 ways, for example, as 5346973129 + 4374367321 = 73123^2 + 66139^2 .

It is a super-3 number, since 3×9721340450³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9721340450.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 97213355 + ... + 97213454.

Almost surely, 2^9721340450 is an apocalyptic number.

9721340450 is a deficient number, since it is larger than the sum of its proper divisors (8360352880).

9721340450 is a wasteful number, since it uses less digits than its factorization.

9721340450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194426821 (or 194426816 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 9721340450 is about 98596.8582156653. The cubic root of 9721340450 is about 2134.2340818396.

The spelling of 9721340450 in words is "nine billion, seven hundred twenty-one million, three hundred forty thousand, four hundred fifty".