4400402040 has 96 divisors (see below), whose sum is σ = 14497301520. Its totient is φ = 1157359104.

The previous prime is 4400402023. The next prime is 4400402047. The reversal of 4400402040 is 402040044.

It is a happy number.

It is a super-2 number, since 2×4400402040² = 38727076227272323200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400402047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57442 + ... + 110001.

Almost surely, 2^4400402040 is an apocalyptic number.

4400402040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4400402040 is an abundant number, since it is smaller than the sum of its proper divisors (10096899480).

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

4400402040 is a wasteful number, since it uses less digits than its factorization.

4400402040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167533 (or 167526 counting only the distinct ones).

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

The square root of 4400402040 is about 66335.5262284095. The cubic root of 4400402040 is about 1638.6924487606.

Adding to 4400402040 its reverse (402040044), we get a palindrome (4802442084).

The spelling of 4400402040 in words is "four billion, four hundred million, four hundred two thousand, forty".