1009902 has 16 divisors (see below), whose sum is σ = 2138832. Its totient is φ = 316800.

The previous prime is 1009901. The next prime is 1009909. The reversal of 1009902 is 2099001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4849 + ... + 5052.

It is an arithmetic number, because the mean of its divisors is an integer number (133677).

2^1009902 is an apocalyptic number.

1009902 is an abundant number, since it is smaller than the sum of its proper divisors (1128930).

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

1009902 is a wasteful number, since it uses less digits than its factorization.

1009902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9923.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1009902 is about 1004.9388041070. The cubic root of 1009902 is about 100.3289831805.

The spelling of 1009902 in words is "one million, nine thousand, nine hundred two".