549631429 has 4 divisors (see below), whose sum is σ = 550872576. Its totient is φ = 548390284.

The previous prime is 549631387. The next prime is 549631441. The reversal of 549631429 is 924136945.

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 549631429 - 2²⁵ = 516076997 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 (549631469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619909 + ... + 620794.

It is an arithmetic number, because the mean of its divisors is an integer number (137718144).

Almost surely, 2^549631429 is an apocalyptic number.

It is an amenable number.

549631429 is a deficient number, since it is larger than the sum of its proper divisors (1241147).

549631429 is a wasteful number, since it uses less digits than its factorization.

549631429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241146.

The product of its digits is 233280, while the sum is 43.

The square root of 549631429 is about 23444.2195220912. The cubic root of 549631429 is about 819.1382126977.

The spelling of 549631429 in words is "five hundred forty-nine million, six hundred thirty-one thousand, four hundred twenty-nine".