387166249 has 4 divisors (see below), whose sum is σ = 407543440. Its totient is φ = 366789060.

The previous prime is 387166243. The next prime is 387166271. The reversal of 387166249 is 942661783.

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 387166249 - 2⁷ = 387166121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 387166199 and 387166208.

It is not an unprimeable number, because it can be changed into a prime (387166243) 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, 10188567 + ... + 10188604.

It is an arithmetic number, because the mean of its divisors is an integer number (101885860).

Almost surely, 2^387166249 is an apocalyptic number.

It is an amenable number.

387166249 is a deficient number, since it is larger than the sum of its proper divisors (20377191).

387166249 is a wasteful number, since it uses less digits than its factorization.

387166249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20377190.

The product of its digits is 435456, while the sum is 46.

The square root of 387166249 is about 19676.5405750096. The cubic root of 387166249 is about 728.8404993002.

The spelling of 387166249 in words is "three hundred eighty-seven million, one hundred sixty-six thousand, two hundred forty-nine".