3473217421 has 4 divisors (see below), whose sum is σ = 3547115712. Its totient is φ = 3399319132.

The previous prime is 3473217413. The next prime is 3473217427. The reversal of 3473217421 is 1247123743.

3473217421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3473217421 - 2³ = 3473217413 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 (3473217427) 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, 36949075 + ... + 36949168.

It is an arithmetic number, because the mean of its divisors is an integer number (886778928).

Almost surely, 2^3473217421 is an apocalyptic number.

It is an amenable number.

3473217421 is a deficient number, since it is larger than the sum of its proper divisors (73898291).

3473217421 is an equidigital number, since it uses as much as digits as its factorization.

3473217421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73898290.

The product of its digits is 28224, while the sum is 34.

The square root of 3473217421 is about 58934.0090355306. The cubic root of 3473217421 is about 1514.4118185693.

The spelling of 3473217421 in words is "three billion, four hundred seventy-three million, two hundred seventeen thousand, four hundred twenty-one".