36040391 has 8 divisors (see below), whose sum is σ = 38252160. Its totient is φ = 33838848.

The previous prime is 36040387. The next prime is 36040409. The reversal of 36040391 is 19304063.

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

It is a cyclic number.

It is not a de Polignac number, because 36040391 - 2² = 36040387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36040391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36043391) 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, 5450 + ... + 10088.

It is an arithmetic number, because the mean of its divisors is an integer number (4781520).

Almost surely, 2^36040391 is an apocalyptic number.

36040391 is a deficient number, since it is larger than the sum of its proper divisors (2211769).

36040391 is a wasteful number, since it uses less digits than its factorization.

36040391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5113.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 36040391 is about 6003.3649730797. The cubic root of 36040391 is about 330.3161677562.

The spelling of 36040391 in words is "thirty-six million, forty thousand, three hundred ninety-one".