544621398 has 16 divisors (see below), whose sum is σ = 1095262896. Its totient is φ = 180537120.

The previous prime is 544621397. The next prime is 544621417. The reversal of 544621398 is 893126445.

It is a super-2 number, since 2×544621398² = 593224934318948808, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544621397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249661 + ... + 251832.

It is an arithmetic number, because the mean of its divisors is an integer number (68453931).

Almost surely, 2^544621398 is an apocalyptic number.

544621398 is an abundant number, since it is smaller than the sum of its proper divisors (550641498).

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

544621398 is a wasteful number, since it uses less digits than its factorization.

544621398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501679.

The product of its digits is 207360, while the sum is 42.

The square root of 544621398 is about 23337.1248871835. The cubic root of 544621398 is about 816.6417271481.

The spelling of 544621398 in words is "five hundred forty-four million, six hundred twenty-one thousand, three hundred ninety-eight".