387028121 has 4 divisors (see below), whose sum is σ = 387404544. Its totient is φ = 386651700.

The previous prime is 387028073. The next prime is 387028123. The reversal of 387028121 is 121820783.

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 not a de Polignac number, because 387028121 - 2²² = 382833817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387028123) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 186665 + ... + 188726.

It is an arithmetic number, because the mean of its divisors is an integer number (96851136).

Almost surely, 2^387028121 is an apocalyptic number.

It is an amenable number.

387028121 is a deficient number, since it is larger than the sum of its proper divisors (376423).

387028121 is a wasteful number, since it uses less digits than its factorization.

387028121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376422.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 387028121 is about 19673.0302953053. The cubic root of 387028121 is about 728.7538136663.

The spelling of 387028121 in words is "three hundred eighty-seven million, twenty-eight thousand, one hundred twenty-one".