40836797 has 4 divisors (see below), whose sum is σ = 40967580. Its totient is φ = 40706016.

The previous prime is 40836787. The next prime is 40836821. The reversal of 40836797 is 79763804.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7958041 + 32878756 = 2821^2 + 5734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40836797 is a prime.

It is a house number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40836767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64922 + ... + 65547.

It is an arithmetic number, because the mean of its divisors is an integer number (10241895).

Almost surely, 2^40836797 is an apocalyptic number.

It is an amenable number.

40836797 is a deficient number, since it is larger than the sum of its proper divisors (130783).

40836797 is a wasteful number, since it uses less digits than its factorization.

40836797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130782.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 40836797 is about 6390.3675168178. The cubic root of 40836797 is about 344.3635876535.

The spelling of 40836797 in words is "forty million, eight hundred thirty-six thousand, seven hundred ninety-seven".