40040194 has 16 divisors (see below), whose sum is σ = 63234432. Its totient is φ = 18977728.

The previous prime is 40040191. The next prime is 40040197. The reversal of 40040194 is 49104004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40040191) and next prime (40040197).

It is not an unprimeable number, because it can be changed into a prime (40040191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1347 + ... + 9049.

It is an arithmetic number, because the mean of its divisors is an integer number (3952152).

Almost surely, 2^40040194 is an apocalyptic number.

40040194 is a deficient number, since it is larger than the sum of its proper divisors (23194238).

40040194 is a wasteful number, since it uses less digits than its factorization.

40040194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7841.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 40040194 is about 6327.7321371879. The cubic root of 40040194 is about 342.1097022765.

Adding to 40040194 its reverse (49104004), we get a palindrome (89144198).

The spelling of 40040194 in words is "forty million, forty thousand, one hundred ninety-four".