398981067542 has 16 divisors (see below), whose sum is σ = 602992261872. Its totient is φ = 197984382720.

The previous prime is 398981067539. The next prime is 398981067581. The reversal of 398981067542 is 245760189893.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 914942 + ... + 1278702.

It is an arithmetic number, because the mean of its divisors is an integer number (37687016367).

It is a 2-persistent number, because it is pandigital, and so is 2⋅398981067542 = 797962135084, but 3⋅398981067542 = 1196943202626 is not.

Almost surely, 2^398981067542 is an apocalyptic number.

398981067542 is a deficient number, since it is larger than the sum of its proper divisors (204011194330).

398981067542 is a wasteful number, since it uses less digits than its factorization.

398981067542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367903.

The product of its (nonzero) digits is 26127360, while the sum is 62.

The spelling of 398981067542 in words is "three hundred ninety-eight billion, nine hundred eighty-one million, sixty-seven thousand, five hundred forty-two".