423551898 has 48 divisors (see below), whose sum is σ = 1144143936. Its totient is φ = 110013120.

The previous prime is 423551897. The next prime is 423551917. The reversal of 423551898 is 898155324.

423551898 is a `hidden beast` number, since 4 + 2 + 3 + 551 + 8 + 98 = 666.

It is not an unprimeable number, because it can be changed into a prime (423551893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151411 + ... + 154182.

It is an arithmetic number, because the mean of its divisors is an integer number (23836332).

Almost surely, 2^423551898 is an apocalyptic number.

423551898 is an abundant number, since it is smaller than the sum of its proper divisors (720592038).

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

423551898 is a wasteful number, since it uses less digits than its factorization.

423551898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305619 (or 305616 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 423551898 is about 20580.3765271678. The cubic root of 423551898 is about 750.9924036009.

It can be divided in two parts, 42355 and 1898, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 423551898 in words is "four hundred twenty-three million, five hundred fifty-one thousand, eight hundred ninety-eight".