40415315 has 4 divisors (see below), whose sum is σ = 48498384. Its totient is φ = 32332248.

The previous prime is 40415311. The next prime is 40415317. The reversal of 40415315 is 51351404.

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 40415315 - 2² = 40415311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40415311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4041527 + ... + 4041536.

It is an arithmetic number, because the mean of its divisors is an integer number (12124596).

Almost surely, 2^40415315 is an apocalyptic number.

40415315 is a deficient number, since it is larger than the sum of its proper divisors (8083069).

40415315 is an equidigital number, since it uses as much as digits as its factorization.

40415315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8083068.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 40415315 is about 6357.3040669768. The cubic root of 40415315 is about 343.1747474053.

Adding to 40415315 its reverse (51351404), we get a palindrome (91766719).

The spelling of 40415315 in words is "forty million, four hundred fifteen thousand, three hundred fifteen".