679429 has 4 divisors (see below), whose sum is σ = 681120. Its totient is φ = 677740.

The previous prime is 679423. The next prime is 679433. The reversal of 679429 is 924976.

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 a de Polignac number, because none of the positive numbers 2^k-679429 is a prime.

It is a d-powerful number, because it can be written as 6² + 7⁵ + 4³ + 9 + 2¹⁷ + 9⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679423) 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, 144 + ... + 1174.

It is an arithmetic number, because the mean of its divisors is an integer number (170280).

2⁶⁷⁹⁴²⁹ is an apocalyptic number.

It is an amenable number.

679429 is a deficient number, since it is larger than the sum of its proper divisors (1691).

679429 is a wasteful number, since it uses less digits than its factorization.

679429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690.

The product of its digits is 27216, while the sum is 37.

The square root of 679429 is about 824.2748328076. The cubic root of 679429 is about 87.9119729256.

The spelling of 679429 in words is "six hundred seventy-nine thousand, four hundred twenty-nine".