209373057 has 24 divisors (see below), whose sum is σ = 308162400. Its totient is φ = 136952640.

The previous prime is 209373053. The next prime is 209373083. The reversal of 209373057 is 750373902.

It is a happy number.

209373057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 209373057 - 2² = 209373053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (209373053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199069 + ... + 200117.

It is an arithmetic number, because the mean of its divisors is an integer number (12840100).

Almost surely, 2^209373057 is an apocalyptic number.

It is an amenable number.

209373057 is a deficient number, since it is larger than the sum of its proper divisors (98789343).

209373057 is a wasteful number, since it uses less digits than its factorization.

209373057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453 (or 1450 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 36.

The square root of 209373057 is about 14469.7289884780. The cubic root of 209373057 is about 593.8000976824.

The spelling of 209373057 in words is "two hundred nine million, three hundred seventy-three thousand, fifty-seven".