394455288887 has 32 divisors (see below), whose sum is σ = 441460316160. Its totient is φ = 349380613120.

The previous prime is 394455288883. The next prime is 394455288893. The reversal of 394455288887 is 788882554493.

It is not a de Polignac number, because 394455288887 - 2² = 394455288883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 394455288887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394455288881) 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 31 ways as a sum of consecutive naturals, for example, 135596789 + ... + 135599697.

It is an arithmetic number, because the mean of its divisors is an integer number (13795634880).

Almost surely, 2^394455288887 is an apocalyptic number.

394455288887 is a deficient number, since it is larger than the sum of its proper divisors (47005027273).

394455288887 is a wasteful number, since it uses less digits than its factorization.

394455288887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4063.

The product of its digits is 619315200, while the sum is 71.

The spelling of 394455288887 in words is "three hundred ninety-four billion, four hundred fifty-five million, two hundred eighty-eight thousand, eight hundred eighty-seven".