1390213866 has 16 divisors (see below), whose sum is σ = 2807423424. Its totient is φ = 458905344.

The previous prime is 1390213859. The next prime is 1390213883. The reversal of 1390213866 is 6683120931.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1124151 + ... + 1125386.

It is an arithmetic number, because the mean of its divisors is an integer number (175463964).

Almost surely, 2^1390213866 is an apocalyptic number.

1390213866 is an abundant number, since it is smaller than the sum of its proper divisors (1417209558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1390213866 is a wasteful number, since it uses less digits than its factorization.

1390213866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249645.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 1390213866 is about 37285.5718207459. The cubic root of 1390213866 is about 1116.0762640422.

The spelling of 1390213866 in words is "one billion, three hundred ninety million, two hundred thirteen thousand, eight hundred sixty-six".