40336139 has 4 divisors (see below), whose sum is σ = 40727856. Its totient is φ = 39944424.

The previous prime is 40336133. The next prime is 40336157. The reversal of 40336139 is 93163304.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40336139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40336133) 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, 195704 + ... + 195909.

It is an arithmetic number, because the mean of its divisors is an integer number (10181964).

Almost surely, 2^40336139 is an apocalyptic number.

40336139 is a deficient number, since it is larger than the sum of its proper divisors (391717).

40336139 is a wasteful number, since it uses less digits than its factorization.

40336139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391716.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 40336139 is about 6351.0738462090. The cubic root of 40336139 is about 342.9505010070.

The spelling of 40336139 in words is "forty million, three hundred thirty-six thousand, one hundred thirty-nine".