168869408 has 12 divisors (see below), whose sum is σ = 332461710. Its totient is φ = 84434688.

The previous prime is 168869399. The next prime is 168869417. The reversal of 168869408 is 804968861.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (168869399) and next prime (168869417).

It can be written as a sum of positive squares in only one way, i.e., 148547344 + 20322064 = 12188^2 + 4508^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2638553 + ... + 2638616.

Almost surely, 2^168869408 is an apocalyptic number.

It is an amenable number.

168869408 is a deficient number, since it is larger than the sum of its proper divisors (163592302).

168869408 is an equidigital number, since it uses as much as digits as its factorization.

168869408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277179 (or 5277171 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 168869408 is about 12994.9762600784. The cubic root of 168869408 is about 552.7350356450.

The spelling of 168869408 in words is "one hundred sixty-eight million, eight hundred sixty-nine thousand, four hundred eight".