40340038 has 4 divisors (see below), whose sum is σ = 60510060. Its totient is φ = 20170018.

The previous prime is 40340033. The next prime is 40340057. The reversal of 40340038 is 83004304.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40340033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10085008 + ... + 10085011.

It is an arithmetic number, because the mean of its divisors is an integer number (15127515).

Almost surely, 2^40340038 is an apocalyptic number.

40340038 is a deficient number, since it is larger than the sum of its proper divisors (20170022).

40340038 is a wasteful number, since it uses less digits than its factorization.

40340038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20170021.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 40340038 is about 6351.3807947564. The cubic root of 40340038 is about 342.9615508245.

The spelling of 40340038 in words is "forty million, three hundred forty thousand, thirty-eight".