40413621 has 16 divisors (see below), whose sum is σ = 54580736. Its totient is φ = 26597376.

The previous prime is 40413619. The next prime is 40413623. The reversal of 40413621 is 12631404.

40413621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40413619) and next prime (40413623).

It is not a de Polignac number, because 40413621 - 2¹ = 40413619 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 (40413623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128961 + ... + 129273.

It is an arithmetic number, because the mean of its divisors is an integer number (3411296).

Almost surely, 2^40413621 is an apocalyptic number.

It is an amenable number.

40413621 is a deficient number, since it is larger than the sum of its proper divisors (14167115).

40413621 is a wasteful number, since it uses less digits than its factorization.

40413621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40413621 is about 6357.1708330043. The cubic root of 40413621 is about 343.1699526375.

The spelling of 40413621 in words is "forty million, four hundred thirteen thousand, six hundred twenty-one".