789246021 has 4 divisors (see below), whose sum is σ = 1052328032. Its totient is φ = 526164012.

The previous prime is 789246013. The next prime is 789246041. The reversal of 789246021 is 120642987.

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 789246021 - 2³ = 789246013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789246041) 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, 131541001 + ... + 131541006.

It is an arithmetic number, because the mean of its divisors is an integer number (263082008).

Almost surely, 2^789246021 is an apocalyptic number.

It is an amenable number.

789246021 is a deficient number, since it is larger than the sum of its proper divisors (263082011).

789246021 is a wasteful number, since it uses less digits than its factorization.

789246021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263082010.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 789246021 is about 28093.5227588140. The cubic root of 789246021 is about 924.1393586307.

The spelling of 789246021 in words is "seven hundred eighty-nine million, two hundred forty-six thousand, twenty-one".