4739721 has 24 divisors (see below), whose sum is σ = 7742880. Its totient is φ = 2564352.

The previous prime is 4739717. The next prime is 4739729. The reversal of 4739721 is 1279374.

4739721 = 74² + 75² + ... + 244².

It is not a de Polignac number, because 4739721 - 2² = 4739717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4739729) 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, 1945 + ... + 3641.

It is an arithmetic number, because the mean of its divisors is an integer number (322620).

Almost surely, 2^4739721 is an apocalyptic number.

It is an amenable number.

4739721 is a deficient number, since it is larger than the sum of its proper divisors (3003159).

4739721 is a wasteful number, since it uses less digits than its factorization.

4739721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733 (or 1726 counting only the distinct ones).

The product of its digits is 10584, while the sum is 33.

The square root of 4739721 is about 2177.0900302927. The cubic root of 4739721 is about 167.9774275229.

It can be divided in two parts, 4739 and 721, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 4739721 in words is "four million, seven hundred thirty-nine thousand, seven hundred twenty-one".