4400135145 has 24 divisors (see below), whose sum is σ = 8716458816. Its totient is φ = 2011490208.

The previous prime is 4400135141. The next prime is 4400135149. The reversal of 4400135145 is 5415310044.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4400135141) and next prime (4400135149).

It is not a de Polignac number, because 4400135145 - 2² = 4400135141 is a prime.

It is a super-2 number, since 2×4400135145² = 38722378588528342050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4400135141) 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, 6984027 + ... + 6984656.

It is an arithmetic number, because the mean of its divisors is an integer number (363185784).

Almost surely, 2^4400135145 is an apocalyptic number.

4400135145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4400135145 is a deficient number, since it is larger than the sum of its proper divisors (4316323671).

4400135145 is a wasteful number, since it uses less digits than its factorization.

4400135145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13968701 (or 13968698 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 4400135145 is about 66333.5144930525. The cubic root of 4400135145 is about 1638.6593178739.

Adding to 4400135145 its reverse (5415310044), we get a palindrome (9815445189).

The spelling of 4400135145 in words is "four billion, four hundred million, one hundred thirty-five thousand, one hundred forty-five".