729487 has 16 divisors (see below), whose sum is σ = 870912. Its totient is φ = 603520.

The previous prime is 729473. The next prime is 729493. The reversal of 729487 is 784927.

It is a happy number.

729487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 729487 - 2⁷ = 729359 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 (729457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8748 + ... + 8830.

It is an arithmetic number, because the mean of its divisors is an integer number (54432).

2⁷²⁹⁴⁸⁷ is an apocalyptic number.

729487 is a deficient number, since it is larger than the sum of its proper divisors (141425).

729487 is a wasteful number, since it uses less digits than its factorization.

729487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158.

The product of its digits is 28224, while the sum is 37.

The square root of 729487 is about 854.1001112282. The cubic root of 729487 is about 90.0200366912.

It can be divided in two parts, 7294 and 87, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 729487 in words is "seven hundred twenty-nine thousand, four hundred eighty-seven".