1384440975 has 18 divisors (see below), whose sum is σ = 2479688016. Its totient is φ = 738368400.

The previous prime is 1384440923. The next prime is 1384440979. The reversal of 1384440975 is 5790444831.

1384440975 is a `hidden beast` number, since 138 + 4 + 440 + 9 + 75 = 666.

It is not a de Polignac number, because 1384440975 - 2¹¹ = 1384438927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1384440975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384440979) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3076311 + ... + 3076760.

Almost surely, 2^1384440975 is an apocalyptic number.

1384440975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1384440975 is a deficient number, since it is larger than the sum of its proper divisors (1095247041).

1384440975 is a wasteful number, since it uses less digits than its factorization.

1384440975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6153087 (or 6153079 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 1384440975 is about 37208.0767441694. The cubic root of 1384440975 is about 1114.5292777309.

The spelling of 1384440975 in words is "one billion, three hundred eighty-four million, four hundred forty thousand, nine hundred seventy-five".