40644452 has 6 divisors (see below), whose sum is σ = 71127798. Its totient is φ = 20322224.

The previous prime is 40644437. The next prime is 40644469. The reversal of 40644452 is 25444604.

It is a happy number.

40644452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 22886656 + 17757796 = 4784^2 + 4214^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5080553 + ... + 5080560.

It is an arithmetic number, because the mean of its divisors is an integer number (11854633).

Almost surely, 2^40644452 is an apocalyptic number.

It is an amenable number.

40644452 is a deficient number, since it is larger than the sum of its proper divisors (30483346).

40644452 is a wasteful number, since it uses less digits than its factorization.

40644452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10161117 (or 10161115 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 40644452 is about 6375.3001497969. The cubic root of 40644452 is about 343.8220753770.

The spelling of 40644452 in words is "forty million, six hundred forty-four thousand, four hundred fifty-two".