431629 has 4 divisors (see below), whose sum is σ = 470880. Its totient is φ = 392380.

The previous prime is 431621. The next prime is 431657. The reversal of 431629 is 926134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 431629 - 2³ = 431621 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 (431621) 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, 19609 + ... + 19630.

It is an arithmetic number, because the mean of its divisors is an integer number (117720).

2⁴³¹⁶²⁹ is an apocalyptic number.

It is an amenable number.

431629 is a deficient number, since it is larger than the sum of its proper divisors (39251).

431629 is a wasteful number, since it uses less digits than its factorization.

431629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39250.

The product of its digits is 1296, while the sum is 25.

The square root of 431629 is about 656.9847791235. The cubic root of 431629 is about 75.5736164852.

The spelling of 431629 in words is "four hundred thirty-one thousand, six hundred twenty-nine".