40216293 has 48 divisors (see below), whose sum is σ = 66976000. Its totient is φ = 23048064.

The previous prime is 40216289. The next prime is 40216321. The reversal of 40216293 is 39261204.

It is not a de Polignac number, because 40216293 - 2² = 40216289 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40216273) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 175503 + ... + 175731.

Almost surely, 2^40216293 is an apocalyptic number.

It is an amenable number.

40216293 is a deficient number, since it is larger than the sum of its proper divisors (26759707).

40216293 is a wasteful number, since it uses less digits than its factorization.

40216293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 40216293 is about 6341.6317300834. The cubic root of 40216293 is about 342.6105079676.

Adding to 40216293 its reverse (39261204), we get a palindrome (79477497).

The spelling of 40216293 in words is "forty million, two hundred sixteen thousand, two hundred ninety-three".