1388479433 has 8 divisors (see below), whose sum is σ = 1580561856. Its totient is φ = 1207373200.

The previous prime is 1388479423. The next prime is 1388479451. The reversal of 1388479433 is 3349748831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1388479433 - 2⁸ = 1388479177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1388479423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2743778 + ... + 2744283.

It is an arithmetic number, because the mean of its divisors is an integer number (197570232).

Almost surely, 2^1388479433 is an apocalyptic number.

It is an amenable number.

1388479433 is a deficient number, since it is larger than the sum of its proper divisors (192082423).

1388479433 is a wasteful number, since it uses less digits than its factorization.

1388479433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5488095.

The product of its digits is 1741824, while the sum is 50.

The square root of 1388479433 is about 37262.3057928518. The cubic root of 1388479433 is about 1115.6119313887.

The spelling of 1388479433 in words is "one billion, three hundred eighty-eight million, four hundred seventy-nine thousand, four hundred thirty-three".