388139014 has 4 divisors (see below), whose sum is σ = 582208524. Its totient is φ = 194069506.

The previous prime is 388138997. The next prime is 388139021. The reversal of 388139014 is 410931883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 410931883 = 71 ⋅5787773.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97034752 + ... + 97034755.

It is an arithmetic number, because the mean of its divisors is an integer number (145552131).

Almost surely, 2^388139014 is an apocalyptic number.

388139014 is a deficient number, since it is larger than the sum of its proper divisors (194069510).

388139014 is a wasteful number, since it uses less digits than its factorization.

388139014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194069509.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 388139014 is about 19701.2439708766. The cubic root of 388139014 is about 729.4503988563.

The spelling of 388139014 in words is "three hundred eighty-eight million, one hundred thirty-nine thousand, fourteen".