388479380 has 24 divisors (see below), whose sum is σ = 819474432. Its totient is φ = 154693152.

The previous prime is 388479349. The next prime is 388479397. The reversal of 388479380 is 83974883.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39092 + ... + 48011.

It is an arithmetic number, because the mean of its divisors is an integer number (34144768).

Almost surely, 2^388479380 is an apocalyptic number.

It is an amenable number.

388479380 is an abundant number, since it is smaller than the sum of its proper divisors (430995052).

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

388479380 is a wasteful number, since it uses less digits than its factorization.

388479380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87335 (or 87333 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 388479380 is about 19709.8802634618. The cubic root of 388479380 is about 729.6635592336.

The spelling of 388479380 in words is "three hundred eighty-eight million, four hundred seventy-nine thousand, three hundred eighty".