40813445 has 16 divisors (see below), whose sum is σ = 50190192. Its totient is φ = 31848960.

The previous prime is 40813403. The next prime is 40813471. The reversal of 40813445 is 54431804.

40813445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 70756 + 40742689 = 266^2 + 6383^2 .

It is not a de Polignac number, because 40813445 - 2¹⁶ = 40747909 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 61415 + ... + 62075.

It is an arithmetic number, because the mean of its divisors is an integer number (3136887).

Almost surely, 2^40813445 is an apocalyptic number.

It is an amenable number.

40813445 is a deficient number, since it is larger than the sum of its proper divisors (9376747).

40813445 is a wasteful number, since it uses less digits than its factorization.

40813445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 40813445 is about 6388.5401305776. The cubic root of 40813445 is about 344.2979351668.

The spelling of 40813445 in words is "forty million, eight hundred thirteen thousand, four hundred forty-five".