40456445 has 4 divisors (see below), whose sum is σ = 48547740. Its totient is φ = 32365152.

The previous prime is 40456433. The next prime is 40456483. The reversal of 40456445 is 54465404.

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 23059204 + 17397241 = 4802^2 + 4171^2 .

It is a cyclic number.

It is not a de Polignac number, because 40456445 - 2¹⁰ = 40455421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4045640 + ... + 4045649.

It is an arithmetic number, because the mean of its divisors is an integer number (12136935).

Almost surely, 2^40456445 is an apocalyptic number.

It is an amenable number.

40456445 is a deficient number, since it is larger than the sum of its proper divisors (8091295).

40456445 is an equidigital number, since it uses as much as digits as its factorization.

40456445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8091294.

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 40456445 is about 6360.5381061668. The cubic root of 40456445 is about 343.2911223648.

The spelling of 40456445 in words is "forty million, four hundred fifty-six thousand, four hundred forty-five".