420091884 has 36 divisors (see below), whose sum is σ = 1074700536. Its totient is φ = 138342528.

The previous prime is 420091873. The next prime is 420091907. The reversal of 420091884 is 488190024.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67309 + ... + 73284.

Almost surely, 2^420091884 is an apocalyptic number.

It is an amenable number.

420091884 is an abundant number, since it is smaller than the sum of its proper divisors (654608652).

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

420091884 is a wasteful number, since it uses less digits than its factorization.

420091884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140686 (or 140681 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 420091884 is about 20496.1431493830. The cubic root of 420091884 is about 748.9418464502.

The spelling of 420091884 in words is "four hundred twenty million, ninety-one thousand, eight hundred eighty-four".