40215413 has 4 divisors (see below), whose sum is σ = 45960480. Its totient is φ = 34470348.

The previous prime is 40215397. The next prime is 40215433. The reversal of 40215413 is 31451204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40215413 - 2⁴ = 40215397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40215433) 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, 2872523 + ... + 2872536.

It is an arithmetic number, because the mean of its divisors is an integer number (11490120).

Almost surely, 2^40215413 is an apocalyptic number.

It is an amenable number.

40215413 is a deficient number, since it is larger than the sum of its proper divisors (5745067).

40215413 is an equidigital number, since it uses as much as digits as its factorization.

40215413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5745066.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 40215413 is about 6341.5623469300. The cubic root of 40215413 is about 342.6080089850.

Adding to 40215413 its reverse (31451204), we get a palindrome (71666617).

The spelling of 40215413 in words is "forty million, two hundred fifteen thousand, four hundred thirteen".