40474645 has 4 divisors (see below), whose sum is σ = 48569580. Its totient is φ = 32379712.

The previous prime is 40474613. The next prime is 40474699. The reversal of 40474645 is 54647404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4498641 + 35976004 = 2121^2 + 5998^2 .

It is a cyclic number.

It is not a de Polignac number, because 40474645 - 2⁵ = 40474613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40474645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4047460 + ... + 4047469.

It is an arithmetic number, because the mean of its divisors is an integer number (12142395).

Almost surely, 2^40474645 is an apocalyptic number.

It is an amenable number.

40474645 is a deficient number, since it is larger than the sum of its proper divisors (8094935).

40474645 is an equidigital number, since it uses as much as digits as its factorization.

40474645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8094934.

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 40474645 is about 6361.9686418592. The cubic root of 40474645 is about 343.3425930411.

The spelling of 40474645 in words is "forty million, four hundred seventy-four thousand, six hundred forty-five".