209908482 has 32 divisors (see below), whose sum is σ = 480580224. Its totient is φ = 59875200.

The previous prime is 209908481. The next prime is 209908483. The reversal of 209908482 is 284809902.

It is an interprime number because it is at equal distance from previous prime (209908481) and next prime (209908483).

It is a super-3 number, since 3×209908482³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (209908481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23982 + ... + 31542.

It is an arithmetic number, because the mean of its divisors is an integer number (15018132).

Almost surely, 2^209908482 is an apocalyptic number.

209908482 is an abundant number, since it is smaller than the sum of its proper divisors (270671742).

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

209908482 is a wasteful number, since it uses less digits than its factorization.

209908482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8234.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 209908482 is about 14488.2187310932. The cubic root of 209908482 is about 594.3058373573.

The spelling of 209908482 in words is "two hundred nine million, nine hundred eight thousand, four hundred eighty-two".