383650987 has 4 divisors (see below), whose sum is σ = 385110000. Its totient is φ = 382191976.

The previous prime is 383650979. The next prime is 383651003. The reversal of 383650987 is 789056383.

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 383650987 - 2³ = 383650979 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 383650987.

It is not an unprimeable number, because it can be changed into a prime (383650957) 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, 729112 + ... + 729637.

It is an arithmetic number, because the mean of its divisors is an integer number (96277500).

Almost surely, 2^383650987 is an apocalyptic number.

383650987 is a deficient number, since it is larger than the sum of its proper divisors (1459013).

383650987 is a wasteful number, since it uses less digits than its factorization.

383650987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459012.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 383650987 is about 19587.0106703397. The cubic root of 383650987 is about 726.6279624991.

The spelling of 383650987 in words is "three hundred eighty-three million, six hundred fifty thousand, nine hundred eighty-seven".