1436729 has 12 divisors (see below), whose sum is σ = 1692900. Its totient is φ = 1215648.

The previous prime is 1436711. The next prime is 1436731. The reversal of 1436729 is 9276341.

It can be written as a sum of positive squares in 2 ways, for example, as 490000 + 946729 = 700^2 + 973^2 .

It is not a de Polignac number, because 1436729 - 2¹⁶ = 1371193 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1436695 and 1436704.

It is not an unprimeable number, because it can be changed into a prime (1436749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5207 + ... + 5475.

It is an arithmetic number, because the mean of its divisors is an integer number (141075).

2^1436729 is an apocalyptic number.

It is an amenable number.

1436729 is a deficient number, since it is larger than the sum of its proper divisors (256171).

1436729 is a wasteful number, since it uses less digits than its factorization.

1436729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 385 counting only the distinct ones).

The product of its digits is 9072, while the sum is 32.

The square root of 1436729 is about 1198.6363084773. The cubic root of 1436729 is about 112.8387550635.

The spelling of 1436729 in words is "one million, four hundred thirty-six thousand, seven hundred twenty-nine".