387055913 has 4 divisors (see below), whose sum is σ = 387233028. Its totient is φ = 386878800.

The previous prime is 387055909. The next prime is 387055931. The reversal of 387055913 is 319550783.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 325008784 + 62047129 = 18028^2 + 7877^2 .

It is a cyclic number.

It is not a de Polignac number, because 387055913 - 2² = 387055909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (387055993) 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, 85238 + ... + 89663.

It is an arithmetic number, because the mean of its divisors is an integer number (96808257).

Almost surely, 2^387055913 is an apocalyptic number.

It is an amenable number.

387055913 is a deficient number, since it is larger than the sum of its proper divisors (177115).

387055913 is a wasteful number, since it uses less digits than its factorization.

387055913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177114.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 387055913 is about 19673.7366303405. The cubic root of 387055913 is about 728.7712568787.

The spelling of 387055913 in words is "three hundred eighty-seven million, fifty-five thousand, nine hundred thirteen".