998773259 has 8 divisors (see below), whose sum is σ = 1104917760. Its totient is φ = 895186600.

The previous prime is 998773249. The next prime is 998773261. The reversal of 998773259 is 952377899.

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

It is not a de Polignac number, because 998773259 - 2⁸ = 998773003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 998773198 and 998773207.

It is not an unprimeable number, because it can be changed into a prime (998773249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638639 + ... + 640200.

It is an arithmetic number, because the mean of its divisors is an integer number (138114720).

Almost surely, 2^998773259 is an apocalyptic number.

998773259 is a deficient number, since it is larger than the sum of its proper divisors (106144501).

998773259 is a wasteful number, since it uses less digits than its factorization.

998773259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278921.

The product of its digits is 8573040, while the sum is 59.

The square root of 998773259 is about 31603.3741711229. The cubic root of 998773259 is about 999.5909190089.

The spelling of 998773259 in words is "nine hundred ninety-eight million, seven hundred seventy-three thousand, two hundred fifty-nine".