998977953 has 32 divisors (see below), whose sum is σ = 1489328640. Its totient is φ = 591909120.

The previous prime is 998977943. The next prime is 998977961. The reversal of 998977953 is 359779899.

998977953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 998977953 - 2¹⁷ = 998846881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998977943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 334758 + ... + 337728.

It is an arithmetic number, because the mean of its divisors is an integer number (46541520).

Almost surely, 2^998977953 is an apocalyptic number.

It is an amenable number.

998977953 is a deficient number, since it is larger than the sum of its proper divisors (490350687).

998977953 is a wasteful number, since it uses less digits than its factorization.

998977953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3357.

The product of its digits is 38578680, while the sum is 66.

The square root of 998977953 is about 31606.6124885284. The cubic root of 998977953 is about 999.6592015363.

The spelling of 998977953 in words is "nine hundred ninety-eight million, nine hundred seventy-seven thousand, nine hundred fifty-three".