387629197 has 8 divisors (see below), whose sum is σ = 399385400. Its totient is φ = 376047360.

The previous prime is 387629191. The next prime is 387629243. The reversal of 387629197 is 791926783.

It can be written as a sum of positive squares in 4 ways, for example, as 14791716 + 372837481 = 3846^2 + 19309^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387629197 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387629191) 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 7 ways as a sum of consecutive naturals, for example, 39072 + ... + 47977.

It is an arithmetic number, because the mean of its divisors is an integer number (49923175).

Almost surely, 2^387629197 is an apocalyptic number.

It is an amenable number.

387629197 is a deficient number, since it is larger than the sum of its proper divisors (11756203).

387629197 is an equidigital number, since it uses as much as digits as its factorization.

387629197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87183.

The product of its digits is 1143072, while the sum is 52.

The square root of 387629197 is about 19688.3010186252. The cubic root of 387629197 is about 729.1308834743.

The spelling of 387629197 in words is "three hundred eighty-seven million, six hundred twenty-nine thousand, one hundred ninety-seven".