4739421 has 4 divisors (see below), whose sum is σ = 6319232. Its totient is φ = 3159612.

The previous prime is 4739407. The next prime is 4739443. The reversal of 4739421 is 1249374.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4739421 - 2²² = 545117 is a prime.

It is a super-2 number, since 2×4739421² = 44924222830482, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4739491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789901 + ... + 789906.

It is an arithmetic number, because the mean of its divisors is an integer number (1579808).

Almost surely, 2^4739421 is an apocalyptic number.

It is an amenable number.

4739421 is a deficient number, since it is larger than the sum of its proper divisors (1579811).

4739421 is a wasteful number, since it uses less digits than its factorization.

4739421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579810.

The product of its digits is 6048, while the sum is 30.

The square root of 4739421 is about 2177.0211298929. The cubic root of 4739421 is about 167.9738834119.

The spelling of 4739421 in words is "four million, seven hundred thirty-nine thousand, four hundred twenty-one".