9999402 has 16 divisors (see below), whose sum is σ = 22855872. Its totient is φ = 2856960.

The previous prime is 9999401. The next prime is 9999419. The reversal of 9999402 is 2049999.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 238081 = 9999402 / (9 + 9 + 9 + 9 + 4 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (9999401) 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, 118999 + ... + 119082.

It is an arithmetic number, because the mean of its divisors is an integer number (1428492).

Almost surely, 2^9999402 is an apocalyptic number.

9999402 is an abundant number, since it is smaller than the sum of its proper divisors (12856470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9999402 is a wasteful number, since it uses less digits than its factorization.

9999402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238093.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 9999402 is about 3162.1831066527. The cubic root of 9999402 is about 215.4391744111.

It can be divided in two parts, 9999 and 402, that added together give a palindrome (10401).

The spelling of 9999402 in words is "nine million, nine hundred ninety-nine thousand, four hundred two".