40183394 has 4 divisors (see below), whose sum is σ = 60275094. Its totient is φ = 20091696.

The previous prime is 40183391. The next prime is 40183397. The reversal of 40183394 is 49338104.

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

It is an interprime number because it is at equal distance from previous prime (40183391) and next prime (40183397).

It can be written as a sum of positive squares in only one way, i.e., 22231225 + 17952169 = 4715^2 + 4237^2 .

It is a super-2 number, since 2×40183394² = 3229410306718472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40183394.

It is not an unprimeable number, because it can be changed into a prime (40183391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10045847 + ... + 10045850.

Almost surely, 2^40183394 is an apocalyptic number.

40183394 is a deficient number, since it is larger than the sum of its proper divisors (20091700).

40183394 is a wasteful number, since it uses less digits than its factorization.

40183394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20091699.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 40183394 is about 6339.0373086140. The cubic root of 40183394 is about 342.5170581306.

The spelling of 40183394 in words is "forty million, one hundred eighty-three thousand, three hundred ninety-four".