40464040 has 16 divisors (see below), whose sum is σ = 91044180. Its totient is φ = 16185600.

The previous prime is 40464031. The next prime is 40464049. The reversal of 40464040 is 4046404.

It is a happy number.

40464040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40464031) and next prime (40464049).

It can be written as a sum of positive squares in 2 ways, for example, as 39664804 + 799236 = 6298^2 + 894^2 .

It is not an unprimeable number, because it can be changed into a prime (40464049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505761 + ... + 505840.

Almost surely, 2^40464040 is an apocalyptic number.

40464040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40464040 is an abundant number, since it is smaller than the sum of its proper divisors (50580140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40464040 is a wasteful number, since it uses less digits than its factorization.

40464040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011612 (or 1011608 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 40464040 is about 6361.1351188290. The cubic root of 40464040 is about 343.3126033503.

The spelling of 40464040 in words is "forty million, four hundred sixty-four thousand, forty".