1138399470 has 48 divisors (see below), whose sum is σ = 3187521792. Its totient is φ = 280221120.

The previous prime is 1138399447. The next prime is 1138399487. The reversal of 1138399470 is 749938311.

1138399470 is a `hidden beast` number, since 1 + 13 + 83 + 99 + 470 = 666.

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

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 485326 + ... + 487665.

It is an arithmetic number, because the mean of its divisors is an integer number (66406704).

Almost surely, 2^1138399470 is an apocalyptic number.

1138399470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138399470 is an abundant number, since it is smaller than the sum of its proper divisors (2049122322).

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

1138399470 is a wasteful number, since it uses less digits than its factorization.

1138399470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973017 (or 973014 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1138399470 is about 33740.1759035130. The cubic root of 1138399470 is about 1044.1548136560.

The spelling of 1138399470 in words is "one billion, one hundred thirty-eight million, three hundred ninety-nine thousand, four hundred seventy".