9937736021 has 8 divisors (see below), whose sum is σ = 9956553600. Its totient is φ = 9918936720.

The previous prime is 9937735981. The next prime is 9937736027. The reversal of 9937736021 is 1206377399.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9937736021 - 2⁶ = 9937735957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9937736027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1532975 + ... + 1539443.

It is an arithmetic number, because the mean of its divisors is an integer number (1244569200).

Almost surely, 2^9937736021 is an apocalyptic number.

It is an amenable number.

9937736021 is a deficient number, since it is larger than the sum of its proper divisors (18817579).

9937736021 is a wasteful number, since it uses less digits than its factorization.

9937736021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9139.

The product of its (nonzero) digits is 428652, while the sum is 47.

The square root of 9937736021 is about 99688.1939900608. The cubic root of 9937736021 is about 2149.9539215652.

The spelling of 9937736021 in words is "nine billion, nine hundred thirty-seven million, seven hundred thirty-six thousand, twenty-one".