40440550 has 24 divisors (see below), whose sum is σ = 79180200. Its totient is φ = 15324480.

The previous prime is 40440527. The next prime is 40440557. The reversal of 40440550 is 5504404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40440557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20335 + ... + 22234.

It is an arithmetic number, because the mean of its divisors is an integer number (3299175).

Almost surely, 2^40440550 is an apocalyptic number.

40440550 is a deficient number, since it is larger than the sum of its proper divisors (38739650).

40440550 is a wasteful number, since it uses less digits than its factorization.

40440550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42600 (or 42595 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 40440550 is about 6359.2884822125. The cubic root of 40440550 is about 343.2461577354.

Adding to 40440550 its reverse (5504404), we get a palindrome (45944954).

The spelling of 40440550 in words is "forty million, four hundred forty thousand, five hundred fifty".