421656486 has 16 divisors (see below), whose sum is σ = 843566400. Its totient is φ = 140509928.

The previous prime is 421656419. The next prime is 421656503. The reversal of 421656486 is 684656124.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16345 + ... + 33323.

It is an arithmetic number, because the mean of its divisors is an integer number (52722900).

Almost surely, 2^421656486 is an apocalyptic number.

421656486 is an abundant number, since it is smaller than the sum of its proper divisors (421909914).

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

421656486 is a wasteful number, since it uses less digits than its factorization.

421656486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21123.

The product of its digits is 276480, while the sum is 42.

The square root of 421656486 is about 20534.2758820466. The cubic root of 421656486 is about 749.8704878590.

The spelling of 421656486 in words is "four hundred twenty-one million, six hundred fifty-six thousand, four hundred eighty-six".