1384011440 has 40 divisors (see below), whose sum is σ = 3677517600. Its totient is φ = 474518016.

The previous prime is 1384011437. The next prime is 1384011443. The reversal of 1384011440 is 441104831.

It is an interprime number because it is at equal distance from previous prime (1384011437) and next prime (1384011443).

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1384011443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1235165 + ... + 1236284.

It is an arithmetic number, because the mean of its divisors is an integer number (91937940).

Almost surely, 2^1384011440 is an apocalyptic number.

1384011440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1384011440 is an abundant number, since it is smaller than the sum of its proper divisors (2293506160).

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

1384011440 is a wasteful number, since it uses less digits than its factorization.

1384011440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2471469 (or 2471463 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 1384011440 is about 37202.3042297114. The cubic root of 1384011440 is about 1114.4140016350.

The spelling of 1384011440 in words is "one billion, three hundred eighty-four million, eleven thousand, four hundred forty".