4749921 has 24 divisors (see below), whose sum is σ = 7766304. Its totient is φ = 2877120.

The previous prime is 4749911. The next prime is 4749967. The reversal of 4749921 is 1299474.

It is not a de Polignac number, because 4749921 - 2⁷ = 4749793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4749911) 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, 1785 + ... + 3561.

It is an arithmetic number, because the mean of its divisors is an integer number (323596).

Almost surely, 2^4749921 is an apocalyptic number.

It is an amenable number.

4749921 is a deficient number, since it is larger than the sum of its proper divisors (3016383).

4749921 is a wasteful number, since it uses less digits than its factorization.

4749921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803 (or 1791 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 4749921 is about 2179.4313478520. The cubic root of 4749921 is about 168.0978384188.

The spelling of 4749921 in words is "four million, seven hundred forty-nine thousand, nine hundred twenty-one".