40415379 has 4 divisors (see below), whose sum is σ = 53887176. Its totient is φ = 26943584.

The previous prime is 40415371. The next prime is 40415407. The reversal of 40415379 is 97351404.

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 40415379 - 2³ = 40415371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40415371) 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, 6735894 + ... + 6735899.

It is an arithmetic number, because the mean of its divisors is an integer number (13471794).

Almost surely, 2^40415379 is an apocalyptic number.

40415379 is a deficient number, since it is larger than the sum of its proper divisors (13471797).

40415379 is a wasteful number, since it uses less digits than its factorization.

40415379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13471796.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 40415379 is about 6357.3091005550. The cubic root of 40415379 is about 343.1749285509.

The spelling of 40415379 in words is "forty million, four hundred fifteen thousand, three hundred seventy-nine".