1392840086 has 32 divisors (see below), whose sum is σ = 2345967360. Its totient is φ = 614829600.

The previous prime is 1392840083. The next prime is 1392840089. The reversal of 1392840086 is 6800482931.

It is an interprime number because it is at equal distance from previous prime (1392840083) and next prime (1392840089).

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392840083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98000 + ... + 111308.

It is an arithmetic number, because the mean of its divisors is an integer number (73311480).

Almost surely, 2^1392840086 is an apocalyptic number.

1392840086 is a deficient number, since it is larger than the sum of its proper divisors (953127274).

1392840086 is a wasteful number, since it uses less digits than its factorization.

1392840086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13460.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 1392840086 is about 37320.7728483749. The cubic root of 1392840086 is about 1116.7786063571.

The spelling of 1392840086 in words is "one billion, three hundred ninety-two million, eight hundred forty thousand, eighty-six".