902630009 has 4 divisors (see below), whose sum is σ = 941874816. Its totient is φ = 863385204.

The previous prime is 902629991. The next prime is 902630039. The reversal of 902630009 is 900036209.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-902630009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (902630039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19622369 + ... + 19622414.

It is an arithmetic number, because the mean of its divisors is an integer number (235468704).

Almost surely, 2^902630009 is an apocalyptic number.

It is an amenable number.

902630009 is a deficient number, since it is larger than the sum of its proper divisors (39244807).

902630009 is a wasteful number, since it uses less digits than its factorization.

902630009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39244806.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 902630009 is about 30043.8015071329. The cubic root of 902630009 is about 966.4289314044.

The spelling of 902630009 in words is "nine hundred two million, six hundred thirty thousand, nine".