209970294 has 16 divisors (see below), whose sum is σ = 420752880. Its totient is φ = 69854720.

The previous prime is 209970253. The next prime is 209970331. The reversal of 209970294 is 492079902.

209970294 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30459 + ... + 36710.

It is an arithmetic number, because the mean of its divisors is an integer number (26297055).

Almost surely, 2^209970294 is an apocalyptic number.

209970294 is an abundant number, since it is smaller than the sum of its proper divisors (210782586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

209970294 is a wasteful number, since it uses less digits than its factorization.

209970294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67695.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 209970294 is about 14490.3517555648. The cubic root of 209970294 is about 594.3641669474.

The spelling of 209970294 in words is "two hundred nine million, nine hundred seventy thousand, two hundred ninety-four".