998962303957 has 8 divisors (see below), whose sum is σ = 1005851187000. Its totient is φ = 992075880384.

The previous prime is 998962303943. The next prime is 998962303961. The reversal of 998962303957 is 759303269899.

It can be written as a sum of positive squares in 4 ways, for example, as 117154913841 + 881807390116 = 342279^2 + 939046^2 .

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

It is a 4-Lehmer number, since φ(998962303957) divides (998962303957-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 998962303957 - 2³⁹ = 449206490069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998962303967) 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, 204019 + ... + 1428127.

It is an arithmetic number, because the mean of its divisors is an integer number (125731398375).

Almost surely, 2^998962303957 is an apocalyptic number.

998962303957 is the 816073-rd pentagonal number.

It is an amenable number.

998962303957 is a deficient number, since it is larger than the sum of its proper divisors (6888883043).

998962303957 is a wasteful number, since it uses less digits than its factorization.

998962303957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229735.

The product of its (nonzero) digits is 198404640, while the sum is 70.

The spelling of 998962303957 in words is "nine hundred ninety-eight billion, nine hundred sixty-two million, three hundred three thousand, nine hundred fifty-seven".