40306444 has 12 divisors (see below), whose sum is σ = 72256968. Its totient is φ = 19661600.

The previous prime is 40306423. The next prime is 40306459. The reversal of 40306444 is 44460304.

It is a happy 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, 122722 + ... + 123049.

It is an arithmetic number, because the mean of its divisors is an integer number (6021414).

Almost surely, 2^40306444 is an apocalyptic number.

It is an amenable number.

40306444 is a deficient number, since it is larger than the sum of its proper divisors (31950524).

40306444 is a wasteful number, since it uses less digits than its factorization.

40306444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245816 (or 245814 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 40306444 is about 6348.7356221534. The cubic root of 40306444 is about 342.8663216127.

Adding to 40306444 its reverse (44460304), we get a palindrome (84766748).

The spelling of 40306444 in words is "forty million, three hundred six thousand, four hundred forty-four".