998147522 has 4 divisors (see below), whose sum is σ = 1497221286. Its totient is φ = 499073760.

The previous prime is 998147461. The next prime is 998147543. The reversal of 998147522 is 225741899.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 585204481 + 412943041 = 24191^2 + 20321^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 249536879 + ... + 249536882.

Almost surely, 2^998147522 is an apocalyptic number.

998147522 is a deficient number, since it is larger than the sum of its proper divisors (499073764).

998147522 is a wasteful number, since it uses less digits than its factorization.

998147522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499073763.

The product of its digits is 362880, while the sum is 47.

The square root of 998147522 is about 31593.4727752427. The cubic root of 998147522 is about 999.3821256432.

The spelling of 998147522 in words is "nine hundred ninety-eight million, one hundred forty-seven thousand, five hundred twenty-two".