421909488 has 240 divisors, whose sum is σ = 1585898496. Its totient is φ = 101122560.

The previous prime is 421909471. The next prime is 421909511. The reversal of 421909488 is 884909124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 142681 + ... + 145607.

Almost surely, 2^421909488 is an apocalyptic number.

421909488 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421909488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (792949248).

421909488 is an abundant number, since it is smaller than the sum of its proper divisors (1163989008).

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

421909488 is a wasteful number, since it uses less digits than its factorization.

421909488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2972 (or 2963 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 421909488 is about 20540.4354384224. The cubic root of 421909488 is about 750.0204367764.

It can be divided in two parts, 421 and 909488, that added together give a palindrome (909909).

The spelling of 421909488 in words is "four hundred twenty-one million, nine hundred nine thousand, four hundred eighty-eight".