40494158 has 4 divisors (see below), whose sum is σ = 60741240. Its totient is φ = 20247078.

The previous prime is 40494151. The next prime is 40494161. The reversal of 40494158 is 85149404.

It is a happy number.

40494158 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40494151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10123538 + ... + 10123541.

It is an arithmetic number, because the mean of its divisors is an integer number (15185310).

Almost surely, 2^40494158 is an apocalyptic number.

40494158 is a deficient number, since it is larger than the sum of its proper divisors (20247082).

40494158 is a wasteful number, since it uses less digits than its factorization.

40494158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20247081.

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

The square root of 40494158 is about 6363.5020232573. The cubic root of 40494158 is about 343.3977598224.

The spelling of 40494158 in words is "forty million, four hundred ninety-four thousand, one hundred fifty-eight".