36999943 has 4 divisors (see below), whose sum is σ = 37079640. Its totient is φ = 36920248.

The previous prime is 36999931. The next prime is 36999959. The reversal of 36999943 is 34999963.

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

It is a cyclic number.

It is not a de Polignac number, because 36999943 - 2²⁵ = 3445511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36999913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39148 + ... + 40081.

It is an arithmetic number, because the mean of its divisors is an integer number (9269910).

Almost surely, 2^36999943 is an apocalyptic number.

36999943 is a deficient number, since it is larger than the sum of its proper divisors (79697).

36999943 is an equidigital number, since it uses as much as digits as its factorization.

36999943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79696.

The product of its digits is 1417176, while the sum is 52.

The square root of 36999943 is about 6082.7578449253. The cubic root of 36999943 is about 333.2220140504. Note that the first 3 decimals are identical.

The spelling of 36999943 in words is "thirty-six million, nine hundred ninety-nine thousand, nine hundred forty-three".