902080009 has 4 divisors (see below), whose sum is σ = 902195460. Its totient is φ = 901964560.

The previous prime is 902080001. The next prime is 902080019. The reversal of 902080009 is 900080209.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 900080209 = 7 ⋅128582887.

It can be written as a sum of positive squares in 2 ways, for example, as 75690000 + 826390009 = 8700^2 + 28747^2 .

It is a cyclic number.

It is not a de Polignac number, because 902080009 - 2³ = 902080001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (902080001) 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 3 ways as a sum of consecutive naturals, for example, 45082 + ... + 61939.

It is an arithmetic number, because the mean of its divisors is an integer number (225548865).

Almost surely, 2^902080009 is an apocalyptic number.

It is an amenable number.

902080009 is a deficient number, since it is larger than the sum of its proper divisors (115451).

902080009 is a wasteful number, since it uses less digits than its factorization.

902080009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115450.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 902080009 is about 30034.6468099760. The cubic root of 902080009 is about 966.2325999789.

The spelling of 902080009 in words is "nine hundred two million, eighty thousand, nine".