209907012 has 24 divisors (see below), whose sum is σ = 559752256. Its totient is φ = 59973408.

The previous prime is 209906989. The next prime is 209907013. The reversal of 209907012 is 210709902.

It is not an unprimeable number, because it can be changed into a prime (209907013) 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, 1249363 + ... + 1249530.

Almost surely, 2^209907012 is an apocalyptic number.

It is an amenable number.

209907012 is an abundant number, since it is smaller than the sum of its proper divisors (349845244).

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

209907012 is a wasteful number, since it uses less digits than its factorization.

209907012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498907 (or 2498905 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 209907012 is about 14488.1680001303. The cubic root of 209907012 is about 594.3044500358.

The spelling of 209907012 in words is "two hundred nine million, nine hundred seven thousand, twelve".