40435645 has 4 divisors (see below), whose sum is σ = 48522780. Its totient is φ = 32348512.

The previous prime is 40435643. The next prime is 40435697. The reversal of 40435645 is 54653404.

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 21399876 + 19035769 = 4626^2 + 4363^2 .

It is a cyclic number.

It is not a de Polignac number, because 40435645 - 2¹ = 40435643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40435643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4043560 + ... + 4043569.

It is an arithmetic number, because the mean of its divisors is an integer number (12130695).

Almost surely, 2^40435645 is an apocalyptic number.

It is an amenable number.

40435645 is a deficient number, since it is larger than the sum of its proper divisors (8087135).

40435645 is an equidigital number, since it uses as much as digits as its factorization.

40435645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8087134.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 40435645 is about 6358.9028141653. The cubic root of 40435645 is about 343.2322798292.

The spelling of 40435645 in words is "forty million, four hundred thirty-five thousand, six hundred forty-five".