40894145 has 4 divisors (see below), whose sum is σ = 49072980. Its totient is φ = 32715312.

The previous prime is 40894103. The next prime is 40894151. The reversal of 40894145 is 54149804.

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 15904144 + 24990001 = 3988^2 + 4999^2 .

It is a cyclic number.

It is not a de Polignac number, because 40894145 - 2⁶ = 40894081 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4089410 + ... + 4089419.

It is an arithmetic number, because the mean of its divisors is an integer number (12268245).

Almost surely, 2^40894145 is an apocalyptic number.

It is an amenable number.

40894145 is a deficient number, since it is larger than the sum of its proper divisors (8178835).

40894145 is an equidigital number, since it uses as much as digits as its factorization.

40894145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8178834.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 40894145 is about 6394.8530084749. The cubic root of 40894145 is about 344.5247113396.

The spelling of 40894145 in words is "forty million, eight hundred ninety-four thousand, one hundred forty-five".