421475986 has 8 divisors (see below), whose sum is σ = 632550204. Its totient is φ = 210625920.

The previous prime is 421475953. The next prime is 421475987. The reversal of 421475986 is 689574124.

It can be written as a sum of positive squares in 2 ways, for example, as 412861761 + 8614225 = 20319^2 + 2935^2 .

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

It is not an unprimeable number, because it can be changed into a prime (421475987) 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, 51255 + ... + 58906.

Almost surely, 2^421475986 is an apocalyptic number.

421475986 is a deficient number, since it is larger than the sum of its proper divisors (211074218).

421475986 is a wasteful number, since it uses less digits than its factorization.

421475986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112076.

The product of its digits is 483840, while the sum is 46.

The square root of 421475986 is about 20529.8803211319. The cubic root of 421475986 is about 749.7634726735.

It can be divided in two parts, 4214 and 75986, that added together give a triangular number (80200 = T₄₀₀).

The spelling of 421475986 in words is "four hundred twenty-one million, four hundred seventy-five thousand, nine hundred eighty-six".