40444002 has 16 divisors (see below), whose sum is σ = 89875680. Its totient is φ = 13481316.

The previous prime is 40443937. The next prime is 40444007. The reversal of 40444002 is 20044404.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40444007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374428 + ... + 374535.

It is an arithmetic number, because the mean of its divisors is an integer number (5617230).

Almost surely, 2^40444002 is an apocalyptic number.

40444002 is an abundant number, since it is smaller than the sum of its proper divisors (49431678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40444002 is a wasteful number, since it uses less digits than its factorization.

40444002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748974 (or 748968 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 40444002 is about 6359.5598904327. The cubic root of 40444002 is about 343.2559239397.

Adding to 40444002 its reverse (20044404), we get a palindrome (60488406).

The spelling of 40444002 in words is "forty million, four hundred forty-four thousand, two".