432428749 has 4 divisors (see below), whose sum is σ = 440587836. Its totient is φ = 424269664.

The previous prime is 432428743. The next prime is 432428753. The reversal of 432428749 is 947824234.

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 211906249 + 220522500 = 14557^2 + 14850^2 .

It is not a de Polignac number, because 432428749 - 2³ = 432428741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (432428741) 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, 4079464 + ... + 4079569.

It is an arithmetic number, because the mean of its divisors is an integer number (110146959).

Almost surely, 2^432428749 is an apocalyptic number.

It is an amenable number.

432428749 is a deficient number, since it is larger than the sum of its proper divisors (8159087).

432428749 is an equidigital number, since it uses as much as digits as its factorization.

432428749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8159086.

The product of its digits is 387072, while the sum is 43.

The square root of 432428749 is about 20794.9212309160. The cubic root of 432428749 is about 756.2026351594.

The spelling of 432428749 in words is "four hundred thirty-two million, four hundred twenty-eight thousand, seven hundred forty-nine".