40448864 has 12 divisors (see below), whose sum is σ = 79633764. Its totient is φ = 20224416.

The previous prime is 40448857. The next prime is 40448887. The reversal of 40448864 is 46884404.

It is a super-2 number, since 2×40448864² = 3272221197780992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631982 + ... + 632045.

It is an arithmetic number, because the mean of its divisors is an integer number (6636147).

Almost surely, 2^40448864 is an apocalyptic number.

It is an amenable number.

40448864 is a deficient number, since it is larger than the sum of its proper divisors (39184900).

40448864 is a wasteful number, since it uses less digits than its factorization.

40448864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264037 (or 1264029 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 38.

The square root of 40448864 is about 6359.9421381016. The cubic root of 40448864 is about 343.2696782943.

The spelling of 40448864 in words is "forty million, four hundred forty-eight thousand, eight hundred sixty-four".