729434 has 4 divisors (see below), whose sum is σ = 1094154. Its totient is φ = 364716.

The previous prime is 729413. The next prime is 729451. The reversal of 729434 is 434927.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 494209 + 235225 = 703^2 + 485^2 .

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 729397 and 729406.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182357 + ... + 182360.

2⁷²⁹⁴³⁴ is an apocalyptic number.

729434 is a deficient number, since it is larger than the sum of its proper divisors (364720).

729434 is a wasteful number, since it uses less digits than its factorization.

729434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364719.

The product of its digits is 6048, while the sum is 29.

The square root of 729434 is about 854.0690838568. The cubic root of 729434 is about 90.0178565392.

The spelling of 729434 in words is "seven hundred twenty-nine thousand, four hundred thirty-four".