209879053 has 8 divisors (see below), whose sum is σ = 213100416. Its totient is φ = 206665200.

The previous prime is 209879051. The next prime is 209879069. The reversal of 209879053 is 350978902.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 209879053 - 2¹ = 209879051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209879051) 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, 82600 + ... + 85102.

It is an arithmetic number, because the mean of its divisors is an integer number (26637552).

Almost surely, 2^209879053 is an apocalyptic number.

It is an amenable number.

209879053 is a deficient number, since it is larger than the sum of its proper divisors (3221363).

209879053 is a wasteful number, since it uses less digits than its factorization.

209879053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3755.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 209879053 is about 14487.2030771989. The cubic root of 209879053 is about 594.2780623261.

The spelling of 209879053 in words is "two hundred nine million, eight hundred seventy-nine thousand, fifty-three".