1398906866044 has 12 divisors (see below), whose sum is σ = 2448122022864. Its totient is φ = 699443430944.

The previous prime is 1398906866039. The next prime is 1398906866081. The reversal of 1398906866044 is 4406686098931.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2181304 + ... + 2748799.

It is an arithmetic number, because the mean of its divisors is an integer number (204010168572).

Almost surely, 2^{1398906866044} is an apocalyptic number.

It is an amenable number.

1398906866044 is a deficient number, since it is larger than the sum of its proper divisors (1049215156820).

1398906866044 is a wasteful number, since it uses less digits than its factorization.

1398906866044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5001044 (or 5001042 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 64.

The spelling of 1398906866044 in words is "one trillion, three hundred ninety-eight billion, nine hundred six million, eight hundred sixty-six thousand, forty-four".