421792789 has 16 divisors (see below), whose sum is σ = 486581760. Its totient is φ = 362016000.

The previous prime is 421792783. The next prime is 421792793. The reversal of 421792789 is 987297124.

It is a cyclic number.

It is not a de Polignac number, because 421792789 - 2⁵ = 421792757 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 (421792783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1104 + ... + 29065.

It is an arithmetic number, because the mean of its divisors is an integer number (30411360).

Almost surely, 2^421792789 is an apocalyptic number.

It is an amenable number.

421792789 is a deficient number, since it is larger than the sum of its proper divisors (64788971).

421792789 is a wasteful number, since it uses less digits than its factorization.

421792789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30252.

The product of its digits is 508032, while the sum is 49.

The square root of 421792789 is about 20537.5945280843. The cubic root of 421792789 is about 749.9512792055.

The spelling of 421792789 in words is "four hundred twenty-one million, seven hundred ninety-two thousand, seven hundred eighty-nine".