380109887 has 4 divisors (see below), whose sum is σ = 380228136. Its totient is φ = 379991640.

The previous prime is 380109883. The next prime is 380109929. The reversal of 380109887 is 788901083.

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 380109887 - 2² = 380109883 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 (380109881) 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, 54164 + ... + 60777.

It is an arithmetic number, because the mean of its divisors is an integer number (95057034).

Almost surely, 2^380109887 is an apocalyptic number.

380109887 is a deficient number, since it is larger than the sum of its proper divisors (118249).

380109887 is a wasteful number, since it uses less digits than its factorization.

380109887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118248.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 380109887 is about 19496.4070279629. The cubic root of 380109887 is about 724.3854559252.

The spelling of 380109887 in words is "three hundred eighty million, one hundred nine thousand, eight hundred eighty-seven".