387969111 has 6 divisors (see below), whose sum is σ = 560399840. Its totient is φ = 258646068.

The previous prime is 387969077. The next prime is 387969139. The reversal of 387969111 is 111969783.

It is not a de Polignac number, because 387969111 - 2¹⁵ = 387936343 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 (387969611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21553831 + ... + 21553848.

Almost surely, 2^387969111 is an apocalyptic number.

387969111 is a deficient number, since it is larger than the sum of its proper divisors (172430729).

387969111 is a wasteful number, since it uses less digits than its factorization.

387969111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43107685 (or 43107682 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 387969111 is about 19696.9315122940. The cubic root of 387969111 is about 729.3439473919.

The spelling of 387969111 in words is "three hundred eighty-seven million, nine hundred sixty-nine thousand, one hundred eleven".