4469729421 has 4 divisors (see below), whose sum is σ = 5959639232. Its totient is φ = 2979819612.

The previous prime is 4469729413. The next prime is 4469729441. The reversal of 4469729421 is 1249279644.

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 4469729421 - 2³ = 4469729413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4469729441) 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, 744954901 + ... + 744954906.

It is an arithmetic number, because the mean of its divisors is an integer number (1489909808).

Almost surely, 2^4469729421 is an apocalyptic number.

It is an amenable number.

4469729421 is a deficient number, since it is larger than the sum of its proper divisors (1489909811).

4469729421 is a wasteful number, since it uses less digits than its factorization.

4469729421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489909810.

The product of its digits is 870912, while the sum is 48.

The square root of 4469729421 is about 66856.0350379829. The cubic root of 4469729421 is about 1647.2533945153.

The spelling of 4469729421 in words is "four billion, four hundred sixty-nine million, seven hundred twenty-nine thousand, four hundred twenty-one".