4435400521 has 4 divisors (see below), whose sum is σ = 4696306452. Its totient is φ = 4174494592.

The previous prime is 4435400513. The next prime is 4435400531. The reversal of 4435400521 is 1250045344.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1981585225 + 2453815296 = 44515^2 + 49536^2 .

It is a cyclic number.

It is not a de Polignac number, because 4435400521 - 2³ = 4435400513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4435400521.

It is not an unprimeable number, because it can be changed into a prime (4435400531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130452940 + ... + 130452973.

It is an arithmetic number, because the mean of its divisors is an integer number (1174076613).

Almost surely, 2^4435400521 is an apocalyptic number.

It is an amenable number.

4435400521 is a deficient number, since it is larger than the sum of its proper divisors (260905931).

4435400521 is a wasteful number, since it uses less digits than its factorization.

4435400521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260905930.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 4435400521 is about 66598.8026994480. The cubic root of 4435400521 is about 1643.0254139291.

Adding to 4435400521 its reverse (1250045344), we get a palindrome (5685445865).

The spelling of 4435400521 in words is "four billion, four hundred thirty-five million, four hundred thousand, five hundred twenty-one".