432887921 has 6 divisors (see below), whose sum is σ = 434385522. Its totient is φ = 431392800.

The previous prime is 432887893. The next prime is 432887927. The reversal of 432887921 is 129788234.

It can be written as a sum of positive squares in only one way, i.e., 431808400 + 1079521 = 20780^2 + 1039^2 .

It is not a de Polignac number, because 432887921 - 2¹⁸ = 432625777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (432887927) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 416120 + ... + 417158.

It is an arithmetic number, because the mean of its divisors is an integer number (72397587).

Almost surely, 2^432887921 is an apocalyptic number.

It is an amenable number.

432887921 is a deficient number, since it is larger than the sum of its proper divisors (1497601).

432887921 is an frugal number, since it uses more digits than its factorization.

432887921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479 (or 1440 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 432887921 is about 20805.9587858863. The cubic root of 432887921 is about 756.4701969633.

The spelling of 432887921 in words is "four hundred thirty-two million, eight hundred eighty-seven thousand, nine hundred twenty-one".