40045479 has 16 divisors (see below), whose sum is σ = 54991104. Its totient is φ = 25905600.

The previous prime is 40045441. The next prime is 40045487. The reversal of 40045479 is 97454004.

It is a happy number.

40045479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40045479 - 2¹⁹ = 39521191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40045409) 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, 25182 + ... + 26724.

It is an arithmetic number, because the mean of its divisors is an integer number (3436944).

Almost surely, 2^40045479 is an apocalyptic number.

40045479 is a deficient number, since it is larger than the sum of its proper divisors (14945625).

40045479 is a wasteful number, since it uses less digits than its factorization.

40045479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 40045479 is about 6328.1497295813. The cubic root of 40045479 is about 342.1247535708.

The spelling of 40045479 in words is "forty million, forty-five thousand, four hundred seventy-nine".