40366945 has 4 divisors (see below), whose sum is σ = 48440340. Its totient is φ = 32293552.

The previous prime is 40366939. The next prime is 40366957. The reversal of 40366945 is 54966304.

It is a happy number.

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 19289664 + 21077281 = 4392^2 + 4591^2 .

It is a cyclic number.

It is not a de Polignac number, because 40366945 - 2¹³ = 40358753 is a prime.

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, 4036690 + ... + 4036699.

It is an arithmetic number, because the mean of its divisors is an integer number (12110085).

Almost surely, 2^40366945 is an apocalyptic number.

It is an amenable number.

40366945 is a deficient number, since it is larger than the sum of its proper divisors (8073395).

40366945 is an equidigital number, since it uses as much as digits as its factorization.

40366945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8073394.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 40366945 is about 6353.4986424804. The cubic root of 40366945 is about 343.0377862136.

The spelling of 40366945 in words is "forty million, three hundred sixty-six thousand, nine hundred forty-five".