398222542 has 8 divisors (see below), whose sum is σ = 602916696. Its totient is φ = 197250312.

The previous prime is 398222537. The next prime is 398222543. The reversal of 398222542 is 245222893.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 930213 + ... + 930640.

It is an arithmetic number, because the mean of its divisors is an integer number (75364587).

Almost surely, 2^398222542 is an apocalyptic number.

398222542 is a deficient number, since it is larger than the sum of its proper divisors (204694154).

398222542 is a wasteful number, since it uses less digits than its factorization.

398222542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860962.

The product of its digits is 69120, while the sum is 37.

The square root of 398222542 is about 19955.5140750621. The cubic root of 398222542 is about 735.7133106307.

The spelling of 398222542 in words is "three hundred ninety-eight million, two hundred twenty-two thousand, five hundred forty-two".