9495721 has 4 divisors (see below), whose sum is σ = 9616000. Its totient is φ = 9375444.

The previous prime is 9495701. The next prime is 9495751. The reversal of 9495721 is 1275949.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1275949 = 751 ⋅1699.

It is a cyclic number.

It is not a de Polignac number, because 9495721 - 2⁷ = 9495593 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 (9495701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60021 + ... + 60178.

It is an arithmetic number, because the mean of its divisors is an integer number (2404000).

Almost surely, 2^9495721 is an apocalyptic number.

It is an amenable number.

9495721 is a deficient number, since it is larger than the sum of its proper divisors (120279).

9495721 is a wasteful number, since it uses less digits than its factorization.

9495721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120278.

The product of its digits is 22680, while the sum is 37.

The square root of 9495721 is about 3081.5127778414. The cubic root of 9495721 is about 211.7593760354.

It can be divided in two parts, 949 and 5721, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 9495721 in words is "nine million, four hundred ninety-five thousand, seven hundred twenty-one".