40887646 has 4 divisors (see below), whose sum is σ = 61331472. Its totient is φ = 20443822.

The previous prime is 40887631. The next prime is 40887653. The reversal of 40887646 is 64678804.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10221910 + ... + 10221913.

It is an arithmetic number, because the mean of its divisors is an integer number (15332868).

Almost surely, 2^40887646 is an apocalyptic number.

40887646 is a deficient number, since it is larger than the sum of its proper divisors (20443826).

40887646 is a wasteful number, since it uses less digits than its factorization.

40887646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20443825.

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 40887646 is about 6394.3448452519. The cubic root of 40887646 is about 344.5064594625.

The spelling of 40887646 in words is "forty million, eight hundred eighty-seven thousand, six hundred forty-six".