9401735721 has 8 divisors (see below), whose sum is σ = 14326454464. Its totient is φ = 5372420400.

The previous prime is 9401735711. The next prime is 9401735729. The reversal of 9401735721 is 1275371049.

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

It is not a de Polignac number, because 9401735721 - 2¹⁹ = 9401211433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9401735721.

It is not an unprimeable number, because it can be changed into a prime (9401735729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223850830 + ... + 223850871.

It is an arithmetic number, because the mean of its divisors is an integer number (1790806808).

Almost surely, 2^9401735721 is an apocalyptic number.

It is an amenable number.

9401735721 is a deficient number, since it is larger than the sum of its proper divisors (4924718743).

9401735721 is a wasteful number, since it uses less digits than its factorization.

9401735721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447701711.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 9401735721 is about 96962.5480327327. The cubic root of 9401735721 is about 2110.5841857807.

The spelling of 9401735721 in words is "nine billion, four hundred one million, seven hundred thirty-five thousand, seven hundred twenty-one".