40481864 has 8 divisors (see below), whose sum is σ = 75903510. Its totient is φ = 20240928.

The previous prime is 40481849. The next prime is 40481867. The reversal of 40481864 is 46818404.

It can be written as a sum of positive squares in only one way, i.e., 39564100 + 917764 = 6290^2 + 958^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (40481867) by changing a digit.

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, 2530109 + ... + 2530124.

Almost surely, 2^40481864 is an apocalyptic number.

It is an amenable number.

40481864 is a deficient number, since it is larger than the sum of its proper divisors (35421646).

40481864 is a wasteful number, since it uses less digits than its factorization.

40481864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5060239 (or 5060235 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 40481864 is about 6362.5359723934. The cubic root of 40481864 is about 343.3630045261.

The spelling of 40481864 in words is "forty million, four hundred eighty-one thousand, eight hundred sixty-four".