93721 has 8 divisors (see below), whose sum is σ = 102600.
Its totient is φ = 85248.
The previous prime is 93719. The next prime is 93739. The reversal of 93721 is 12739.
It can be divided in two parts, 9 and 3721, that multiplied together give a square (33489 = 1832).
It can be written as a sum of positive squares in 4 ways, for example, as 25600 + 68121 = 160^2 + 261^2
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 93721 - 21 = 93719 is a prime.
It is a super-3 number, since 3×937213 = 2469630592333083, which contains 333 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 93692 and 93701.
It is not an unprimeable number, because it can be changed into a prime (93701) 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, 555 + ... + 703.
It is an arithmetic number, because the mean of its divisors is an integer number (12825).
293721 is an apocalyptic number.
It is an amenable number.
93721 is a deficient number, since it is larger than the sum of its proper divisors (8879).
93721 is a wasteful number, since it uses less digits than its factorization.
93721 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 203.
The product of its digits is 378, while the sum is 22.
The square root of 93721 is about 306.1388573834.
The cubic root of 93721 is about 45.4233302047.
The spelling of 93721 in words is "ninety-three thousand, seven hundred twenty-one".