40116215 has 4 divisors (see below), whose sum is σ = 48139464. Its totient is φ = 32092968.

The previous prime is 40116199. The next prime is 40116217. The reversal of 40116215 is 51261104.

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 40116215 - 2⁴ = 40116199 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 (40116217) 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, 4011617 + ... + 4011626.

It is an arithmetic number, because the mean of its divisors is an integer number (12034866).

Almost surely, 2^40116215 is an apocalyptic number.

40116215 is a deficient number, since it is larger than the sum of its proper divisors (8023249).

40116215 is an equidigital number, since it uses as much as digits as its factorization.

40116215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8023248.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 40116215 is about 6333.7362591128. The cubic root of 40116215 is about 342.3260771819.

Adding to 40116215 its reverse (51261104), we get a palindrome (91377319).

The spelling of 40116215 in words is "forty million, one hundred sixteen thousand, two hundred fifteen".