1388479430 has 32 divisors (see below), whose sum is σ = 2697867648. Its totient is φ = 511459200.

The previous prime is 1388479423. The next prime is 1388479451. The reversal of 1388479430 is 349748831.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 43640 + ... + 68420.

It is an arithmetic number, because the mean of its divisors is an integer number (84308364).

Almost surely, 2^1388479430 is an apocalyptic number.

1388479430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1388479430 is a deficient number, since it is larger than the sum of its proper divisors (1309388218).

1388479430 is a wasteful number, since it uses less digits than its factorization.

1388479430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25232.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 1388479430 is about 37262.3057525967. The cubic root of 1388479430 is about 1115.6119305852.

The spelling of 1388479430 in words is "one billion, three hundred eighty-eight million, four hundred seventy-nine thousand, four hundred thirty".