4523729 has 24 divisors (see below), whose sum is σ = 5718240. Its totient is φ = 3556224.

The previous prime is 4523719. The next prime is 4523747. The reversal of 4523729 is 9273254.

It is a happy number.

It is not a de Polignac number, because 4523729 - 2⁴ = 4523713 is a prime.

Its product of digits (15120) is a multiple of the sum of its prime factors (189).

4523729 is a modest number, since divided by 3729 gives 452 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 4523695 and 4523704.

It is not an unprimeable number, because it can be changed into a prime (4523719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39977 + ... + 40089.

It is an arithmetic number, because the mean of its divisors is an integer number (238260).

Almost surely, 2^4523729 is an apocalyptic number.

4523729 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

4523729 is a deficient number, since it is larger than the sum of its proper divisors (1194511).

4523729 is a wasteful number, since it uses less digits than its factorization.

4523729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 182 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 4523729 is about 2126.9059687725. The cubic root of 4523729 is about 165.3860443526.

The spelling of 4523729 in words is "four million, five hundred twenty-three thousand, seven hundred twenty-nine".