421370789 has 8 divisors (see below), whose sum is σ = 509894208. Its totient is φ = 339929280.

The previous prime is 421370779. The next prime is 421370791. The reversal of 421370789 is 987073124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 421370789 - 2²⁸ = 152935333 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 (421370749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1770347 + ... + 1770584.

It is an arithmetic number, because the mean of its divisors is an integer number (63736776).

Almost surely, 2^421370789 is an apocalyptic number.

It is an amenable number.

421370789 is a deficient number, since it is larger than the sum of its proper divisors (88523419).

421370789 is a wasteful number, since it uses less digits than its factorization.

421370789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3540955.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 421370789 is about 20527.3181151362. The cubic root of 421370789 is about 749.7010891819.

The spelling of 421370789 in words is "four hundred twenty-one million, three hundred seventy thousand, seven hundred eighty-nine".