9998402 has 4 divisors (see below), whose sum is σ = 14997606. Its totient is φ = 4999200.

The previous prime is 9998393. The next prime is 9998413. The reversal of 9998402 is 2048999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2048999 = 139 ⋅14741.

It can be written as a sum of positive squares in only one way, i.e., 6754801 + 3243601 = 2599^2 + 1801^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 9998402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2499599 + ... + 2499602.

Almost surely, 2^9998402 is an apocalyptic number.

9998402 is a deficient number, since it is larger than the sum of its proper divisors (4999204).

9998402 is a wasteful number, since it uses less digits than its factorization.

9998402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4999203.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 9998402 is about 3162.0249840885. The cubic root of 9998402 is about 215.4319924364.

The spelling of 9998402 in words is "nine million, nine hundred ninety-eight thousand, four hundred two".