260403993 has 24 divisors (see below), whose sum is σ = 383610240. Its totient is φ = 170172000.

The previous prime is 260403973. The next prime is 260404003. The reversal of 260403993 is 399304062.

It is a happy number.

260403993 is a `hidden beast` number, since 260 + 4 + 0 + 399 + 3 = 666.

It is not a de Polignac number, because 260403993 - 2¹⁶ = 260338457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (260403973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346368 + ... + 347118.

It is an arithmetic number, because the mean of its divisors is an integer number (15983760).

Almost surely, 2^260403993 is an apocalyptic number.

It is an amenable number.

260403993 is a deficient number, since it is larger than the sum of its proper divisors (123206247).

260403993 is a wasteful number, since it uses less digits than its factorization.

260403993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469 (or 1466 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 260403993 is about 16137.0379252204. The cubic root of 260403993 is about 638.5808340796.

The spelling of 260403993 in words is "two hundred sixty million, four hundred three thousand, nine hundred ninety-three".