209274961 has 8 divisors (see below), whose sum is σ = 239258880. Its totient is φ = 179312928.

The previous prime is 209274959. The next prime is 209274971. The reversal of 209274961 is 169472902.

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 209274961 - 2¹ = 209274959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (209274941) 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, 35160 + ... + 40678.

It is an arithmetic number, because the mean of its divisors is an integer number (29907360).

Almost surely, 2^209274961 is an apocalyptic number.

It is an amenable number.

209274961 is a deficient number, since it is larger than the sum of its proper divisors (29983919).

209274961 is an equidigital number, since it uses as much as digits as its factorization.

209274961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10943.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 209274961 is about 14466.3388941363. The cubic root of 209274961 is about 593.7073469489.

The spelling of 209274961 in words is "two hundred nine million, two hundred seventy-four thousand, nine hundred sixty-one".