4729921 has 12 divisors (see below), whose sum is σ = 5573232. Its totient is φ = 4001928.

The previous prime is 4729919. The next prime is 4729937. The reversal of 4729921 is 1299274.

It is a happy number.

It is not a de Polignac number, because 4729921 - 2¹ = 4729919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4729981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3486 + ... + 4648.

It is an arithmetic number, because the mean of its divisors is an integer number (464436).

Almost surely, 2^4729921 is an apocalyptic number.

It is an amenable number.

4729921 is a deficient number, since it is larger than the sum of its proper divisors (843311).

4729921 is a wasteful number, since it uses less digits than its factorization.

4729921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260 (or 1253 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 4729921 is about 2174.8381548980. The cubic root of 4729921 is about 167.8615757910.

The spelling of 4729921 in words is "four million, seven hundred twenty-nine thousand, nine hundred twenty-one".