998899713 has 12 divisors (see below), whose sum is σ = 1648977408. Its totient is φ = 570799800.

The previous prime is 998899709. The next prime is 998899739. The reversal of 998899713 is 317998899.

It is not a de Polignac number, because 998899713 - 2² = 998899709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 15855551 = 998899713 / (9 + 9 + 8 + 8 + 9 + 9 + 7 + 1 + 3).

It is not an unprimeable number, because it can be changed into a prime (998899703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7927713 + ... + 7927838.

It is an arithmetic number, because the mean of its divisors is an integer number (137414784).

It is a Proth number, since it is equal to 7621 ⋅ 2¹⁷ + 1 and 7621 < 2¹⁷.

Almost surely, 2^998899713 is an apocalyptic number.

It is an amenable number.

998899713 is a deficient number, since it is larger than the sum of its proper divisors (650077695).

998899713 is a wasteful number, since it uses less digits than its factorization.

998899713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15855564 (or 15855561 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 63.

The square root of 998899713 is about 31605.3747486088. The cubic root of 998899713 is about 999.6331030698.

The spelling of 998899713 in words is "nine hundred ninety-eight million, eight hundred ninety-nine thousand, seven hundred thirteen".