40708723 has 4 divisors (see below), whose sum is σ = 44409528. Its totient is φ = 37007920.

The previous prime is 40708699. The next prime is 40708747. The reversal of 40708723 is 32780704.

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

It is an interprime number because it is at equal distance from previous prime (40708699) and next prime (40708747).

It is a cyclic number.

It is not a de Polignac number, because 40708723 - 2⁵ = 40708691 is a prime.

It is a super-4 number, since 4×40708723⁴ (a number of 32 digits) contains 4444 as substring.

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 a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40708753) 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, 1850386 + ... + 1850407.

It is an arithmetic number, because the mean of its divisors is an integer number (11102382).

Almost surely, 2^40708723 is an apocalyptic number.

40708723 is a deficient number, since it is larger than the sum of its proper divisors (3700805).

40708723 is a wasteful number, since it uses less digits than its factorization.

40708723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700804.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 40708723 is about 6380.3387841086. The cubic root of 40708723 is about 344.0032083485.

The spelling of 40708723 in words is "forty million, seven hundred eight thousand, seven hundred twenty-three".