40420444 has 12 divisors (see below), whose sum is σ = 70815024. Its totient is φ = 20187584.

The previous prime is 40420433. The next prime is 40420451. The reversal of 40420444 is 44402404.

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, 1264 + ... + 9079.

It is an arithmetic number, because the mean of its divisors is an integer number (5901252).

Almost surely, 2^40420444 is an apocalyptic number.

It is an amenable number.

40420444 is a deficient number, since it is larger than the sum of its proper divisors (30394580).

40420444 is a wasteful number, since it uses less digits than its factorization.

40420444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11324 (or 11322 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 40420444 is about 6357.7074484440. The cubic root of 40420444 is about 343.1892639223.

Adding to 40420444 its reverse (44402404), we get a palindrome (84822848).

The spelling of 40420444 in words is "forty million, four hundred twenty thousand, four hundred forty-four".