420544984 has 8 divisors (see below), whose sum is σ = 788521860. Its totient is φ = 210272488.

The previous prime is 420544961. The next prime is 420544991. The reversal of 420544984 is 489445024.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26284054 + ... + 26284069.

Almost surely, 2^420544984 is an apocalyptic number.

It is an amenable number.

420544984 is a deficient number, since it is larger than the sum of its proper divisors (367976876).

420544984 is a wasteful number, since it uses less digits than its factorization.

420544984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52568129 (or 52568125 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 420544984 is about 20507.1934696096. The cubic root of 420544984 is about 749.2110126601.

Adding to 420544984 its sum of digits (40), we get a palindrome (420545024).

The spelling of 420544984 in words is "four hundred twenty million, five hundred forty-four thousand, nine hundred eighty-four".