387742471 has 4 divisors (see below), whose sum is σ = 387848232. Its totient is φ = 387636712.

The previous prime is 387742463. The next prime is 387742483. The reversal of 387742471 is 174247783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 174247783 = 199 ⋅875617.

It is a cyclic number.

It is not a de Polignac number, because 387742471 - 2³ = 387742463 is a prime.

It is a super-3 number, since 3×387742471³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387142471) 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, 47176 + ... + 54781.

It is an arithmetic number, because the mean of its divisors is an integer number (96962058).

Almost surely, 2^387742471 is an apocalyptic number.

387742471 is a deficient number, since it is larger than the sum of its proper divisors (105761).

387742471 is a wasteful number, since it uses less digits than its factorization.

387742471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105760.

The product of its digits is 263424, while the sum is 43.

The square root of 387742471 is about 19691.1774914554. The cubic root of 387742471 is about 729.2018993907.

The spelling of 387742471 in words is "three hundred eighty-seven million, seven hundred forty-two thousand, four hundred seventy-one".