398222541 has 16 divisors (see below), whose sum is σ = 590709120. Its totient is φ = 265144320.

The previous prime is 398222537. The next prime is 398222543. The reversal of 398222541 is 145222893.

It is a happy number.

398222541 is a `hidden beast` number, since 3 + 98 + 2 + 22 + 541 = 666.

It is not a de Polignac number, because 398222541 - 2² = 398222537 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 398222496 and 398222505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398222543) 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 15 ways as a sum of consecutive naturals, for example, 13261 + ... + 31181.

It is an arithmetic number, because the mean of its divisors is an integer number (36919320).

Almost surely, 2^398222541 is an apocalyptic number.

It is an amenable number.

398222541 is a deficient number, since it is larger than the sum of its proper divisors (192486579).

398222541 is a wasteful number, since it uses less digits than its factorization.

398222541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18753 (or 18747 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 398222541 is about 19955.5140500063. The cubic root of 398222541 is about 735.7133100149.

The spelling of 398222541 in words is "three hundred ninety-eight million, two hundred twenty-two thousand, five hundred forty-one".