209461064 has 16 divisors (see below), whose sum is σ = 392954220. Its totient is φ = 104673280.

The previous prime is 209461061. The next prime is 209461067. The reversal of 209461064 is 460164902.

It is a happy number.

209461064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (209461061) and next prime (209461067).

It can be written as a sum of positive squares in 2 ways, for example, as 178436164 + 31024900 = 13358^2 + 5570^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 209461064.

It is not an unprimeable number, because it can be changed into a prime (209461061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11144 + ... + 23304.

Almost surely, 2^209461064 is an apocalyptic number.

It is an amenable number.

209461064 is a deficient number, since it is larger than the sum of its proper divisors (183493156).

209461064 is a wasteful number, since it uses less digits than its factorization.

209461064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14320 (or 14316 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 209461064 is about 14472.7697418290. The cubic root of 209461064 is about 593.8832845158.

The spelling of 209461064 in words is "two hundred nine million, four hundred sixty-one thousand, sixty-four".