209970054 has 24 divisors (see below), whose sum is σ = 519926160. Its totient is φ = 59991408.

The previous prime is 209970041. The next prime is 209970097. The reversal of 209970054 is 450079902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 833089 + ... + 833340.

It is an arithmetic number, because the mean of its divisors is an integer number (21663590).

Almost surely, 2^209970054 is an apocalyptic number.

209970054 is an abundant number, since it is smaller than the sum of its proper divisors (309956106).

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

209970054 is a wasteful number, since it uses less digits than its factorization.

209970054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666444 (or 1666441 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 209970054 is about 14490.3434741900. The cubic root of 209970054 is about 594.3639404909.

The spelling of 209970054 in words is "two hundred nine million, nine hundred seventy thousand, fifty-four".