6240400191 has 8 divisors (see below), whose sum is σ = 9245037360. Its totient is φ = 4160266776.

The previous prime is 6240400189. The next prime is 6240400217. The reversal of 6240400191 is 1910040426.

6240400191 is a `hidden beast` number, since 6 + 240 + 400 + 19 + 1 = 666.

It is not a de Polignac number, because 6240400191 - 2¹ = 6240400189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 231125933 = 6240400191 / (6 + 2 + 4 + 0 + 4 + 0 + 0 + 1 + 9 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6240400141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115562940 + ... + 115562993.

It is an arithmetic number, because the mean of its divisors is an integer number (1155629670).

Almost surely, 2^6240400191 is an apocalyptic number.

6240400191 is a deficient number, since it is larger than the sum of its proper divisors (3004637169).

6240400191 is a wasteful number, since it uses less digits than its factorization.

6240400191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231125942 (or 231125936 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 6240400191 is about 78996.2036492894. The cubic root of 6240400191 is about 1841.0721727539.

The spelling of 6240400191 in words is "six billion, two hundred forty million, four hundred thousand, one hundred ninety-one".