4374172021 has 4 divisors (see below), whose sum is σ = 4384321344. Its totient is φ = 4364022700.

The previous prime is 4374171979. The next prime is 4374172037. The reversal of 4374172021 is 1202714734.

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 a cyclic number.

It is not a de Polignac number, because 4374172021 - 2²⁹ = 3837301109 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 (4374172421) 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, 5074015 + ... + 5074876.

It is an arithmetic number, because the mean of its divisors is an integer number (1096080336).

Almost surely, 2^4374172021 is an apocalyptic number.

It is an amenable number.

4374172021 is a deficient number, since it is larger than the sum of its proper divisors (10149323).

4374172021 is a wasteful number, since it uses less digits than its factorization.

4374172021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10149322.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 4374172021 is about 66137.5235475294. The cubic root of 4374172021 is about 1635.4299724244.

Adding to 4374172021 its reverse (1202714734), we get a palindrome (5576886755).

The spelling of 4374172021 in words is "four billion, three hundred seventy-four million, one hundred seventy-two thousand, twenty-one".