473538421 has 4 divisors (see below), whose sum is σ = 494127072. Its totient is φ = 452949772.

The previous prime is 473538413. The next prime is 473538427. The reversal of 473538421 is 124835374.

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 a cyclic number.

It is not a de Polignac number, because 473538421 - 2³ = 473538413 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 (473538427) 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, 10294291 + ... + 10294336.

It is an arithmetic number, because the mean of its divisors is an integer number (123531768).

Almost surely, 2^473538421 is an apocalyptic number.

It is an amenable number.

473538421 is a deficient number, since it is larger than the sum of its proper divisors (20588651).

473538421 is a wasteful number, since it uses less digits than its factorization.

473538421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20588650.

The product of its digits is 80640, while the sum is 37.

The square root of 473538421 is about 21760.9379623214. The cubic root of 473538421 is about 779.4442792680. Note that the first 3 decimals are identical.

The spelling of 473538421 in words is "four hundred seventy-three million, five hundred thirty-eight thousand, four hundred twenty-one".