421739466 has 32 divisors (see below), whose sum is σ = 888874560. Its totient is φ = 133030656.

The previous prime is 421739449. The next prime is 421739467. The reversal of 421739466 is 664937124.

It is not an unprimeable number, because it can be changed into a prime (421739467) 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, 144130 + ... + 147026.

It is an arithmetic number, because the mean of its divisors is an integer number (27777330).

Almost surely, 2^421739466 is an apocalyptic number.

421739466 is an abundant number, since it is smaller than the sum of its proper divisors (467135094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421739466 is a wasteful number, since it uses less digits than its factorization.

421739466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4198.

The product of its digits is 217728, while the sum is 42.

The square root of 421739466 is about 20536.2963067833. The cubic root of 421739466 is about 749.9196749530.

The spelling of 421739466 in words is "four hundred twenty-one million, seven hundred thirty-nine thousand, four hundred sixty-six".