40446442 has 4 divisors (see below), whose sum is σ = 60669666. Its totient is φ = 20223220.

The previous prime is 40446437. The next prime is 40446449. The reversal of 40446442 is 24464404.

40446442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 39955041 + 491401 = 6321^2 + 701^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40446442.

It is not an unprimeable number, because it can be changed into a prime (40446449) 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 as a sum of consecutive naturals, namely, 10111609 + ... + 10111612.

Almost surely, 2^40446442 is an apocalyptic number.

40446442 is a deficient number, since it is larger than the sum of its proper divisors (20223224).

40446442 is a wasteful number, since it uses less digits than its factorization.

40446442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20223223.

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 40446442 is about 6359.7517247138. The cubic root of 40446442 is about 343.2628267154.

The spelling of 40446442 in words is "forty million, four hundred forty-six thousand, four hundred forty-two".