846207421 has 4 divisors (see below), whose sum is σ = 882999072. Its totient is φ = 809415772.

The previous prime is 846207413. The next prime is 846207437. The reversal of 846207421 is 124702648.

It is a happy number.

846207421 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 846207421 - 2³ = 846207413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (846207121) 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, 18395791 + ... + 18395836.

It is an arithmetic number, because the mean of its divisors is an integer number (220749768).

Almost surely, 2^846207421 is an apocalyptic number.

It is an amenable number.

846207421 is a deficient number, since it is larger than the sum of its proper divisors (36791651).

846207421 is a wasteful number, since it uses less digits than its factorization.

846207421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36791650.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 846207421 is about 29089.6445664089. The cubic root of 846207421 is about 945.8572779248.

The spelling of 846207421 in words is "eight hundred forty-six million, two hundred seven thousand, four hundred twenty-one".