388450121 has 4 divisors (see below), whose sum is σ = 394247952. Its totient is φ = 382652292.

The previous prime is 388450081. The next prime is 388450123. The reversal of 388450121 is 121054883.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388450121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388450123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2898815 + ... + 2898948.

It is an arithmetic number, because the mean of its divisors is an integer number (98561988).

Almost surely, 2^388450121 is an apocalyptic number.

It is an amenable number.

388450121 is a deficient number, since it is larger than the sum of its proper divisors (5797831).

388450121 is an equidigital number, since it uses as much as digits as its factorization.

388450121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5797830.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 388450121 is about 19709.1380075335. The cubic root of 388450121 is about 729.6452401471.

The spelling of 388450121 in words is "three hundred eighty-eight million, four hundred fifty thousand, one hundred twenty-one".