421475689 has 8 divisors (see below), whose sum is σ = 445985280. Its totient is φ = 397198800.

The previous prime is 421475687. The next prime is 421475707. The reversal of 421475689 is 986574124.

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

It is not a de Polignac number, because 421475689 - 2¹ = 421475687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421475683) 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, 54442 + ... + 61699.

It is an arithmetic number, because the mean of its divisors is an integer number (55748160).

Almost surely, 2^421475689 is an apocalyptic number.

It is an amenable number.

421475689 is a deficient number, since it is larger than the sum of its proper divisors (24509591).

421475689 is a wasteful number, since it uses less digits than its factorization.

421475689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116351.

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

The square root of 421475689 is about 20529.8730877714. The cubic root of 421475689 is about 749.7632965624.

The spelling of 421475689 in words is "four hundred twenty-one million, four hundred seventy-five thousand, six hundred eighty-nine".