387461209 has 4 divisors (see below), whose sum is σ = 389781504. Its totient is φ = 385140916.

The previous prime is 387461171. The next prime is 387461227. The reversal of 387461209 is 902164783.

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 387461209 - 2¹¹ = 387459161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387461309) 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, 1159897 + ... + 1160230.

It is an arithmetic number, because the mean of its divisors is an integer number (97445376).

Almost surely, 2^387461209 is an apocalyptic number.

It is an amenable number.

387461209 is a deficient number, since it is larger than the sum of its proper divisors (2320295).

387461209 is a wasteful number, since it uses less digits than its factorization.

387461209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320294.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 387461209 is about 19684.0343679846. The cubic root of 387461209 is about 729.0255397265.

The spelling of 387461209 in words is "three hundred eighty-seven million, four hundred sixty-one thousand, two hundred nine".