6285399991 has 4 divisors (see below), whose sum is σ = 6768892312. Its totient is φ = 5801907672.

The previous prime is 6285399959. The next prime is 6285400007. The reversal of 6285399991 is 1999935826.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6285399991 - 2⁵ = 6285399959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6285391991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241746141 + ... + 241746166.

It is an arithmetic number, because the mean of its divisors is an integer number (1692223078).

Almost surely, 2^6285399991 is an apocalyptic number.

6285399991 is a deficient number, since it is larger than the sum of its proper divisors (483492321).

6285399991 is a wasteful number, since it uses less digits than its factorization.

6285399991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483492320.

The product of its digits is 9447840, while the sum is 61.

The square root of 6285399991 is about 79280.5145732544. The cubic root of 6285399991 is about 1845.4869288110.

The spelling of 6285399991 in words is "six billion, two hundred eighty-five million, three hundred ninety-nine thousand, nine hundred ninety-one".