40440502 has 4 divisors (see below), whose sum is σ = 60660756. Its totient is φ = 20220250.

The previous prime is 40440497. The next prime is 40440503. The reversal of 40440502 is 20504404.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40440502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40440503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110124 + ... + 10110127.

It is an arithmetic number, because the mean of its divisors is an integer number (15165189).

Almost surely, 2^40440502 is an apocalyptic number.

40440502 is a deficient number, since it is larger than the sum of its proper divisors (20220254).

40440502 is a wasteful number, since it uses less digits than its factorization.

40440502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20220253.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 40440502 is about 6359.2847082042. The cubic root of 40440502 is about 343.2460219326.

Adding to 40440502 its reverse (20504404), we get a palindrome (60944906).

The spelling of 40440502 in words is "forty million, four hundred forty thousand, five hundred two".