421354398 has 16 divisors (see below), whose sum is σ = 871768080. Its totient is φ = 135608256.

The previous prime is 421354379. The next prime is 421354403. The reversal of 421354398 is 893453124.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1210615 + ... + 1210962.

It is an arithmetic number, because the mean of its divisors is an integer number (54485505).

Almost surely, 2^421354398 is an apocalyptic number.

421354398 is an abundant number, since it is smaller than the sum of its proper divisors (450413682).

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

421354398 is a wasteful number, since it uses less digits than its factorization.

421354398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421611.

The product of its digits is 103680, while the sum is 39.

The square root of 421354398 is about 20526.9188628006. The cubic root of 421354398 is about 749.6913681237.

The spelling of 421354398 in words is "four hundred twenty-one million, three hundred fifty-four thousand, three hundred ninety-eight".