40491763 has 8 divisors (see below), whose sum is σ = 43772400. Its totient is φ = 37234848.

The previous prime is 40491757. The next prime is 40491779. The reversal of 40491763 is 36719404.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40491763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40494763) 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, 2293 + ... + 9286.

It is an arithmetic number, because the mean of its divisors is an integer number (5471550).

Almost surely, 2^40491763 is an apocalyptic number.

40491763 is a deficient number, since it is larger than the sum of its proper divisors (3280637).

40491763 is a wasteful number, since it uses less digits than its factorization.

40491763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11861.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 40491763 is about 6363.3138379307. The cubic root of 40491763 is about 343.3909896783.

The spelling of 40491763 in words is "forty million, four hundred ninety-one thousand, seven hundred sixty-three".