260016399 has 20 divisors (see below), whose sum is σ = 397457896. Its totient is φ = 169310736.

The previous prime is 260016373. The next prime is 260016431. The reversal of 260016399 is 993610062.

260016399 is a `hidden beast` number, since 2 + 600 + 16 + 39 + 9 = 666.

It is not a de Polignac number, because 260016399 - 2¹¹ = 260014351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260016359) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33844 + ... + 40809.

Almost surely, 2^260016399 is an apocalyptic number.

260016399 is a deficient number, since it is larger than the sum of its proper divisors (137441497).

260016399 is an equidigital number, since it uses as much as digits as its factorization.

260016399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74708 (or 74699 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 260016399 is about 16125.0239999821. The cubic root of 260016399 is about 638.2638484100.

It can be divided in two parts, 26001 and 6399, that added together give a square (32400 = 180²).

The spelling of 260016399 in words is "two hundred sixty million, sixteen thousand, three hundred ninety-nine".