440402020 has 24 divisors (see below), whose sum is σ = 925243200. Its totient is φ = 176084832.

The previous prime is 440402003. The next prime is 440402029. The reversal of 440402020 is 20204044.

It is a junction number, because it is equal to n+sod(n) for n = 440401985 and 440402003.

It is not an unprimeable number, because it can be changed into a prime (440402029) 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 7 ways as a sum of consecutive naturals, for example, 77641 + ... + 83119.

It is an arithmetic number, because the mean of its divisors is an integer number (38551800).

Almost surely, 2^440402020 is an apocalyptic number.

It is an amenable number.

440402020 is an abundant number, since it is smaller than the sum of its proper divisors (484841180).

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

440402020 is a wasteful number, since it uses less digits than its factorization.

440402020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9507 (or 9505 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 440402020 is about 20985.7575512537. The cubic root of 440402020 is about 760.8220675391.

Adding to 440402020 its reverse (20204044), we get a palindrome (460606064).

The spelling of 440402020 in words is "four hundred forty million, four hundred two thousand, twenty".