40245444 has 96 divisors (see below), whose sum is σ = 108864000. Its totient is φ = 12849408.

The previous prime is 40245437. The next prime is 40245451. The reversal of 40245444 is 44454204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40245437) and next prime (40245451).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 452152 + ... + 452240.

It is an arithmetic number, because the mean of its divisors is an integer number (1134000).

Almost surely, 2^40245444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40245444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54432000).

40245444 is an abundant number, since it is smaller than the sum of its proper divisors (68618556).

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

40245444 is a wasteful number, since it uses less digits than its factorization.

40245444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 40245444 is about 6343.9296969623. The cubic root of 40245444 is about 342.6932690079.

Adding to 40245444 its reverse (44454204), we get a palindrome (84699648).

The spelling of 40245444 in words is "forty million, two hundred forty-five thousand, four hundred forty-four".