40316947394 has 4 divisors (see below), whose sum is σ = 60475421094. Its totient is φ = 20158473696.

The previous prime is 40316947387. The next prime is 40316947439. The reversal of 40316947394 is 49374961304.

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

It can be written as a sum of positive squares in only one way, i.e., 32027755369 + 8289192025 = 178963^2 + 91045^2 .

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 as a sum of consecutive naturals, namely, 10079236847 + ... + 10079236850.

Almost surely, 2^40316947394 is an apocalyptic number.

40316947394 is a deficient number, since it is larger than the sum of its proper divisors (20158473700).

40316947394 is a wasteful number, since it uses less digits than its factorization.

40316947394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20158473699.

The product of its (nonzero) digits is 1959552, while the sum is 50.

The spelling of 40316947394 in words is "forty billion, three hundred sixteen million, nine hundred forty-seven thousand, three hundred ninety-four".