387902101 has 4 divisors (see below), whose sum is σ = 400415104. Its totient is φ = 375389100.

The previous prime is 387902093. The next prime is 387902131. The reversal of 387902101 is 101209783.

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 387902101 - 2³ = 387902093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 12512971 = 387902101 / (3 + 8 + 7 + 9 + 0 + 2 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387902131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6256455 + ... + 6256516.

It is an arithmetic number, because the mean of its divisors is an integer number (100103776).

Almost surely, 2^387902101 is an apocalyptic number.

387902101 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

387902101 is a deficient number, since it is larger than the sum of its proper divisors (12513003).

387902101 is a wasteful number, since it uses less digits than its factorization.

387902101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12513002.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 387902101 is about 19695.2304124628. The cubic root of 387902101 is about 729.3019542275.

The spelling of 387902101 in words is "three hundred eighty-seven million, nine hundred two thousand, one hundred one".