9145723 has 4 divisors (see below), whose sum is σ = 9274608. Its totient is φ = 9016840.

The previous prime is 9145699. The next prime is 9145739. The reversal of 9145723 is 3275419.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9145723 - 2²¹ = 7048571 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

9145723 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9145753) 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, 64336 + ... + 64477.

It is an arithmetic number, because the mean of its divisors is an integer number (2318652).

Almost surely, 2^9145723 is an apocalyptic number.

9145723 is a deficient number, since it is larger than the sum of its proper divisors (128885).

9145723 is a wasteful number, since it uses less digits than its factorization.

9145723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128884.

The product of its digits is 7560, while the sum is 31.

The square root of 9145723 is about 3024.1896435244. The cubic root of 9145723 is about 209.1250291629.

The spelling of 9145723 in words is "nine million, one hundred forty-five thousand, seven hundred twenty-three".