387389099 has 4 divisors (see below), whose sum is σ = 387437136. Its totient is φ = 387341064.

The previous prime is 387389089. The next prime is 387389131. The reversal of 387389099 is 990983783.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 387389099 - 2⁴ = 387389083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387389089) 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, 8639 + ... + 29144.

It is an arithmetic number, because the mean of its divisors is an integer number (96859284).

Almost surely, 2^387389099 is an apocalyptic number.

387389099 is a deficient number, since it is larger than the sum of its proper divisors (48037).

387389099 is a wasteful number, since it uses less digits than its factorization.

387389099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48036.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The square root of 387389099 is about 19682.2025952382. The cubic root of 387389099 is about 728.9803108606.

The spelling of 387389099 in words is "three hundred eighty-seven million, three hundred eighty-nine thousand, ninety-nine".