4038869899440 has 120 divisors (see below), whose sum is σ = 14361746244768. Its totient is φ = 1013677148160.

The previous prime is 4038869899403. The next prime is 4038869899451. The reversal of 4038869899440 is 449989688304.

4038869899440 is a `hidden beast` number, since 4 + 0 + 3 + 8 + 8 + 6 + 98 + 99 + 440 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 164974276 + ... + 164998755.

Almost surely, 2^{4038869899440} is an apocalyptic number.

4038869899440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4038869899440 is an abundant number, since it is smaller than the sum of its proper divisors (10322876345328).

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

4038869899440 is a wasteful number, since it uses less digits than its factorization.

4038869899440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329973067 (or 329973058 counting only the distinct ones).

The product of its (nonzero) digits is 429981696, while the sum is 72.

The spelling of 4038869899440 in words is "four trillion, thirty-eight billion, eight hundred sixty-nine million, eight hundred ninety-nine thousand, four hundred forty".