398922147454 has 4 divisors (see below), whose sum is σ = 598383221184. Its totient is φ = 199461073726.

The previous prime is 398922147433. The next prime is 398922147461. The reversal of 398922147454 is 454741229893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454741229893 = 153089 ⋅2970437.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 99730536862 + ... + 99730536865.

It is an arithmetic number, because the mean of its divisors is an integer number (149595805296).

Almost surely, 2^398922147454 is an apocalyptic number.

398922147454 is a deficient number, since it is larger than the sum of its proper divisors (199461073730).

398922147454 is a wasteful number, since it uses less digits than its factorization.

398922147454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199461073729.

The product of its digits is 17418240, while the sum is 58.

The spelling of 398922147454 in words is "three hundred ninety-eight billion, nine hundred twenty-two million, one hundred forty-seven thousand, four hundred fifty-four".