40447252 has 12 divisors (see below), whose sum is σ = 71143380. Its totient is φ = 20120576.

The previous prime is 40447249. The next prime is 40447261. The reversal of 40447252 is 25274404.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37994896 + 2452356 = 6164^2 + 1566^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40447252.

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 in 3 ways as a sum of consecutive naturals, for example, 24877 + ... + 26452.

It is an arithmetic number, because the mean of its divisors is an integer number (5928615).

Almost surely, 2^40447252 is an apocalyptic number.

It is an amenable number.

40447252 is a deficient number, since it is larger than the sum of its proper divisors (30696128).

40447252 is a wasteful number, since it uses less digits than its factorization.

40447252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51530 (or 51528 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 40447252 is about 6359.8154061262. The cubic root of 40447252 is about 343.2651181492.

The spelling of 40447252 in words is "forty million, four hundred forty-seven thousand, two hundred fifty-two".