40486649 has 4 divisors (see below), whose sum is σ = 46270464. Its totient is φ = 34702836.

The previous prime is 40486643. The next prime is 40486661. The reversal of 40486649 is 94668404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-40486649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40486643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2891897 + ... + 2891910.

It is an arithmetic number, because the mean of its divisors is an integer number (11567616).

Almost surely, 2^40486649 is an apocalyptic number.

It is an amenable number.

40486649 is a deficient number, since it is larger than the sum of its proper divisors (5783815).

40486649 is an equidigital number, since it uses as much as digits as its factorization.

40486649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5783814.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 40486649 is about 6362.9119905905. The cubic root of 40486649 is about 343.3765326190.

The spelling of 40486649 in words is "forty million, four hundred eighty-six thousand, six hundred forty-nine".