40004374 has 4 divisors (see below), whose sum is σ = 60006564. Its totient is φ = 20002186.

The previous prime is 40004357. The next prime is 40004389. The reversal of 40004374 is 47340004.

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001092 + ... + 10001095.

It is an arithmetic number, because the mean of its divisors is an integer number (15001641).

Almost surely, 2^40004374 is an apocalyptic number.

40004374 is a deficient number, since it is larger than the sum of its proper divisors (20002190).

40004374 is a wasteful number, since it uses less digits than its factorization.

40004374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20002189.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 40004374 is about 6324.9011059462. The cubic root of 40004374 is about 342.0076546056.

Adding to 40004374 its reverse (47340004), we get a palindrome (87344378).

The spelling of 40004374 in words is "forty million, four thousand, three hundred seventy-four".