209104968 has 32 divisors (see below), whose sum is σ = 531626400. Its totient is φ = 68519808.

The previous prime is 209104967. The next prime is 209104969. The reversal of 209104968 is 869401902.

It is an interprime number because it is at equal distance from previous prime (209104967) and next prime (209104969).

It is not an unprimeable number, because it can be changed into a prime (209104967) 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, 72421 + ... + 75252.

It is an arithmetic number, because the mean of its divisors is an integer number (16613325).

Almost surely, 2^209104968 is an apocalyptic number.

It is an amenable number.

209104968 is an abundant number, since it is smaller than the sum of its proper divisors (322521432).

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

209104968 is a wasteful number, since it uses less digits than its factorization.

209104968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147741 (or 147737 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 209104968 is about 14460.4622332759. The cubic root of 209104968 is about 593.5465482368.

It can be divided in two parts, 20910 and 4968, that added together give a triangular number (25878 = T₂₂₇).

The spelling of 209104968 in words is "two hundred nine million, one hundred four thousand, nine hundred sixty-eight".