40621413 has 16 divisors (see below), whose sum is σ = 62000640. Its totient is φ = 23174256.

The previous prime is 40621403. The next prime is 40621417. The reversal of 40621413 is 31412604.

It is not a de Polignac number, because 40621413 - 2⁶ = 40621349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40621413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40621417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16198 + ... + 18536.

It is an arithmetic number, because the mean of its divisors is an integer number (3875040).

Almost surely, 2^40621413 is an apocalyptic number.

It is an amenable number.

40621413 is a deficient number, since it is larger than the sum of its proper divisors (21379227).

40621413 is a wasteful number, since it uses less digits than its factorization.

40621413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176.

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

The square root of 40621413 is about 6373.4929983487. The cubic root of 40621413 is about 343.7570987845.

The spelling of 40621413 in words is "forty million, six hundred twenty-one thousand, four hundred thirteen".