398437260444 has 72 divisors (see below), whose sum is σ = 1048624956288. Its totient is φ = 132283206000.

The previous prime is 398437260421. The next prime is 398437260467. The reversal of 398437260444 is 444062734893.

398437260444 is a `hidden beast` number, since 3 + 98 + 43 + 72 + 6 + 0 + 444 = 666.

It is an interprime number because it is at equal distance from previous prime (398437260421) and next prime (398437260467).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 572592 + ... + 1060535.

It is an arithmetic number, because the mean of its divisors is an integer number (14564235504).

Almost surely, 2^398437260444 is an apocalyptic number.

It is an amenable number.

398437260444 is an abundant number, since it is smaller than the sum of its proper divisors (650187695844).

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

398437260444 is a wasteful number, since it uses less digits than its factorization.

398437260444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633397 (or 1633383 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 54.

The spelling of 398437260444 in words is "three hundred ninety-eight billion, four hundred thirty-seven million, two hundred sixty thousand, four hundred forty-four".