40072183 has 4 divisors (see below), whose sum is σ = 40387840. Its totient is φ = 39756528.

The previous prime is 40072177. The next prime is 40072217. The reversal of 40072183 is 38127004.

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 40072183 - 2²⁵ = 6517751 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 (40072103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157638 + ... + 157891.

It is an arithmetic number, because the mean of its divisors is an integer number (10096960).

Almost surely, 2^40072183 is an apocalyptic number.

40072183 is a deficient number, since it is larger than the sum of its proper divisors (315657).

40072183 is a wasteful number, since it uses less digits than its factorization.

40072183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315656.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 40072183 is about 6330.2593153835. The cubic root of 40072183 is about 342.2007843706.

Adding to 40072183 its reverse (38127004), we get a palindrome (78199187).

The spelling of 40072183 in words is "forty million, seventy-two thousand, one hundred eighty-three".