40991363 has 4 divisors (see below), whose sum is σ = 46847280. Its totient is φ = 35135448.

The previous prime is 40991351. The next prime is 40991381. The reversal of 40991363 is 36319904.

40991363 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40991363 - 2⁴ = 40991347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40991323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2927948 + ... + 2927961.

It is an arithmetic number, because the mean of its divisors is an integer number (11711820).

Almost surely, 2^40991363 is an apocalyptic number.

40991363 is a deficient number, since it is larger than the sum of its proper divisors (5855917).

40991363 is an equidigital number, since it uses as much as digits as its factorization.

40991363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5855916.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 40991363 is about 6402.4497655194. The cubic root of 40991363 is about 344.7975091246.

The spelling of 40991363 in words is "forty million, nine hundred ninety-one thousand, three hundred sixty-three".