40008194 has 8 divisors (see below), whose sum is σ = 60043980. Its totient is φ = 19993536.

The previous prime is 40008193. The next prime is 40008203. The reversal of 40008194 is 49180004.

It can be written as a sum of positive squares in 2 ways, for example, as 38278969 + 1729225 = 6187^2 + 1315^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40008193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902 + ... + 8990.

Almost surely, 2^40008194 is an apocalyptic number.

40008194 is a deficient number, since it is larger than the sum of its proper divisors (20035786).

40008194 is a wasteful number, since it uses less digits than its factorization.

40008194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10564.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 40008194 is about 6325.2030797438. The cubic root of 40008194 is about 342.0185403124.

Adding to 40008194 its reverse (49180004), we get a palindrome (89188198).

The spelling of 40008194 in words is "forty million, eight thousand, one hundred ninety-four".