729994 has 4 divisors (see below), whose sum is σ = 1094994. Its totient is φ = 364996.

The previous prime is 729991. The next prime is 730003. The reversal of 729994 is 499927.

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., 632025 + 97969 = 795^2 + 313^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (729991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182497 + ... + 182500.

2⁷²⁹⁹⁹⁴ is an apocalyptic number.

729994 is a deficient number, since it is larger than the sum of its proper divisors (365000).

729994 is a wasteful number, since it uses less digits than its factorization.

729994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364999.

The product of its digits is 40824, while the sum is 40.

The square root of 729994 is about 854.3968632901. The cubic root of 729994 is about 90.0408867722.

The spelling of 729994 in words is "seven hundred twenty-nine thousand, nine hundred ninety-four".