40045470 has 64 divisors (see below), whose sum is σ = 101122560. Its totient is φ = 10136448.

The previous prime is 40045441. The next prime is 40045487. The reversal of 40045470 is 7454004.

40045470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40045470.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 47311 + ... + 48149.

It is an arithmetic number, because the mean of its divisors is an integer number (1580040).

Almost surely, 2^40045470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40045470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50561280).

40045470 is an abundant number, since it is smaller than the sum of its proper divisors (61077090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40045470 is a wasteful number, since it uses less digits than its factorization.

40045470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 40045470 is about 6328.1490184729. The cubic root of 40045470 is about 342.1247279406.

Adding to 40045470 its reverse (7454004), we get a palindrome (47499474).

The spelling of 40045470 in words is "forty million, forty-five thousand, four hundred seventy".