4390387638000 has 320 divisors, whose sum is σ = 17421060314112. Its totient is φ = 926323430400.

The previous prime is 4390387637903. The next prime is 4390387638029. The reversal of 4390387638000 is 8367830934.

It is a super-2 number, since 2×4390387638000² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3474502 + ... + 4566501.

Almost surely, 2^{4390387638000} is an apocalyptic number.

4390387638000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4390387638000 is an abundant number, since it is smaller than the sum of its proper divisors (13030672676112).

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

4390387638000 is a wasteful number, since it uses less digits than its factorization.

4390387638000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8041049 (or 8041033 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 51.

It can be divided in two parts, 43903 and 87638000, that added together give a triangular number (87681903 = T₁₃₂₄₂).

The spelling of 4390387638000 in words is "four trillion, three hundred ninety billion, three hundred eighty-seven million, six hundred thirty-eight thousand".