209152893 has 16 divisors (see below), whose sum is σ = 299090880. Its totient is φ = 129602304.

The previous prime is 209152891. The next prime is 209152913. The reversal of 209152893 is 398251902.

It is not a de Polignac number, because 209152893 - 2¹ = 209152891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209152891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31596 + ... + 37637.

It is an arithmetic number, because the mean of its divisors is an integer number (18693180).

Almost surely, 2^209152893 is an apocalyptic number.

It is an amenable number.

209152893 is a deficient number, since it is larger than the sum of its proper divisors (89937987).

209152893 is a wasteful number, since it uses less digits than its factorization.

209152893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69308.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 209152893 is about 14462.1192430432. The cubic root of 209152893 is about 593.5918899707.

The spelling of 209152893 in words is "two hundred nine million, one hundred fifty-two thousand, eight hundred ninety-three".