4386988994478 has 16 divisors (see below), whose sum is σ = 8782231979136. Its totient is φ = 1460953999800.

The previous prime is 4386988994467. The next prime is 4386988994513. The reversal of 4386988994478 is 8744998896834.

It is a junction number, because it is equal to n+sod(n) for n = 4386988994394 and 4386988994403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343909348 + ... + 343922103.

It is an arithmetic number, because the mean of its divisors is an integer number (548889498696).

Almost surely, 2^{4386988994478} is an apocalyptic number.

4386988994478 is an abundant number, since it is smaller than the sum of its proper divisors (4395242984658).

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

4386988994478 is a wasteful number, since it uses less digits than its factorization.

4386988994478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687832519.

The product of its digits is 24078974976, while the sum is 87.

The spelling of 4386988994478 in words is "four trillion, three hundred eighty-six billion, nine hundred eighty-eight million, nine hundred ninety-four thousand, four hundred seventy-eight".