209122983 has 12 divisors (see below), whose sum is σ = 302206008. Its totient is φ = 139350960.

The previous prime is 209122961. The next prime is 209122997. The reversal of 209122983 is 389221902.

It is not a de Polignac number, because 209122983 - 2⁵ = 209122951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209122283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23241 + ... + 30957.

It is an arithmetic number, because the mean of its divisors is an integer number (25183834).

Almost surely, 2^209122983 is an apocalyptic number.

209122983 is a deficient number, since it is larger than the sum of its proper divisors (93083025).

209122983 is a wasteful number, since it uses less digits than its factorization.

209122983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10734 (or 10731 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 209122983 is about 14461.0851252594. The cubic root of 209122983 is about 593.5635930001.

The spelling of 209122983 in words is "two hundred nine million, one hundred twenty-two thousand, nine hundred eighty-three".