44040402 has 64 divisors (see below), whose sum is σ = 112527360. Its totient is φ = 12506832.

The previous prime is 44040383. The next prime is 44040407. The reversal of 44040402 is 20404044.

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 (44040407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99193 + ... + 99635.

It is an arithmetic number, because the mean of its divisors is an integer number (1758240).

Almost surely, 2^44040402 is an apocalyptic number.

44040402 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 44040402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56263680).

44040402 is an abundant number, since it is smaller than the sum of its proper divisors (68486958).

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

44040402 is a wasteful number, since it uses less digits than its factorization.

44040402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724 (or 718 counting only the distinct ones).

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

The square root of 44040402 is about 6636.2942972716. The cubic root of 44040402 is about 353.1428558805.

Adding to 44040402 its reverse (20404044), we get a palindrome (64444446).

The spelling of 44040402 in words is "forty-four million, forty thousand, four hundred two".