387406199 has 4 divisors (see below), whose sum is σ = 387761736. Its totient is φ = 387050664.

The previous prime is 387406193. The next prime is 387406207. The reversal of 387406199 is 991604783.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 387406199 - 2⁸ = 387405943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387406193) 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, 176129 + ... + 178314.

It is an arithmetic number, because the mean of its divisors is an integer number (96940434).

Almost surely, 2^387406199 is an apocalyptic number.

387406199 is a deficient number, since it is larger than the sum of its proper divisors (355537).

387406199 is a wasteful number, since it uses less digits than its factorization.

387406199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355536.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 387406199 is about 19682.6369930454. The cubic root of 387406199 is about 728.9910368378.

The spelling of 387406199 in words is "three hundred eighty-seven million, four hundred six thousand, one hundred ninety-nine".