40872293 has 16 divisors (see below), whose sum is σ = 51166080. Its totient is φ = 31718400.

The previous prime is 40872289. The next prime is 40872319. The reversal of 40872293 is 39227804.

It is not a de Polignac number, because 40872293 - 2² = 40872289 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40872253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20693 + ... + 22581.

It is an arithmetic number, because the mean of its divisors is an integer number (3197880).

Almost surely, 2^40872293 is an apocalyptic number.

It is an amenable number.

40872293 is a deficient number, since it is larger than the sum of its proper divisors (10293787).

40872293 is a wasteful number, since it uses less digits than its factorization.

40872293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 40872293 is about 6393.1442186142. The cubic root of 40872293 is about 344.4633342128.

The spelling of 40872293 in words is "forty million, eight hundred seventy-two thousand, two hundred ninety-three".