384038855 has 4 divisors (see below), whose sum is σ = 460846632. Its totient is φ = 307231080.

The previous prime is 384038821. The next prime is 384038861. The reversal of 384038855 is 558830483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 558830483 = 97 ⋅5761139.

It is not a de Polignac number, because 384038855 - 2¹⁸ = 383776711 is a prime.

It is a super-5 number, since 5×384038855⁵ (a number of 44 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38403881 + ... + 38403890.

It is an arithmetic number, because the mean of its divisors is an integer number (115211658).

Almost surely, 2^384038855 is an apocalyptic number.

384038855 is a deficient number, since it is larger than the sum of its proper divisors (76807777).

384038855 is an equidigital number, since it uses as much as digits as its factorization.

384038855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76807776.

The product of its (nonzero) digits is 460800, while the sum is 44.

The square root of 384038855 is about 19596.9093226458. The cubic root of 384038855 is about 726.8727516604.

The spelling of 384038855 in words is "three hundred eighty-four million, thirty-eight thousand, eight hundred fifty-five".