421406108964 has 27 divisors (see below), whose sum is σ = 1065230843313. Its totient is φ = 140467404672.

The previous prime is 421406108953. The next prime is 421406109017. The reversal of 421406108964 is 469801604124.

The square root of 421406108964 is 649158.

It is a perfect power (a square), and thus also a powerful number.

421406108964 is a `hidden beast` number, since 4 + 21 + 4 + 0 + 610 + 8 + 9 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 204801502500 + 216604606464 = 452550^2 + 465408^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3840852 + ... + 3949044.

Almost surely, 2^421406108964 is an apocalyptic number.

421406108964 is the 649158-th square number.

It is an amenable number.

421406108964 is an abundant number, since it is smaller than the sum of its proper divisors (643824734349).

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

421406108964 is an frugal number, since it uses more digits than its factorization.

421406108964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216396 (or 108198 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 421406108964 in words is "four hundred twenty-one billion, four hundred six million, one hundred eight thousand, nine hundred sixty-four".