4432400121 has 16 divisors (see below), whose sum is σ = 5953989888. Its totient is φ = 2932944000.

The previous prime is 4432400087. The next prime is 4432400129. The reversal of 4432400121 is 1210042344.

It is not a de Polignac number, because 4432400121 - 2¹⁸ = 4432137977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4432400129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246021 + ... + 263421.

It is an arithmetic number, because the mean of its divisors is an integer number (372124368).

Almost surely, 2^4432400121 is an apocalyptic number.

It is an amenable number.

4432400121 is a deficient number, since it is larger than the sum of its proper divisors (1521589767).

4432400121 is a wasteful number, since it uses less digits than its factorization.

4432400121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18032.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4432400121 is about 66576.2729581643. The cubic root of 4432400121 is about 1642.6548464575.

Adding to 4432400121 its reverse (1210042344), we get a palindrome (5642442465).

The spelling of 4432400121 in words is "four billion, four hundred thirty-two million, four hundred thousand, one hundred twenty-one".