387442727 has 4 divisors (see below), whose sum is σ = 442791696. Its totient is φ = 332093760.

The previous prime is 387442717. The next prime is 387442729. The reversal of 387442727 is 727244783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 727244783 = 953 ⋅763111.

It is a cyclic number.

It is not a de Polignac number, because 387442727 - 2⁴ = 387442711 is a prime.

It is a super-2 number, since 2×387442727² = 300223733410393058, which contains 22 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 (387442729) 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, 27674474 + ... + 27674487.

It is an arithmetic number, because the mean of its divisors is an integer number (110697924).

Almost surely, 2^387442727 is an apocalyptic number.

387442727 is a deficient number, since it is larger than the sum of its proper divisors (55348969).

387442727 is an equidigital number, since it uses as much as digits as its factorization.

387442727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55348968.

The product of its digits is 526848, while the sum is 44.

The square root of 387442727 is about 19683.5648956179. The cubic root of 387442727 is about 729.0139479732.

The spelling of 387442727 in words is "three hundred eighty-seven million, four hundred forty-two thousand, seven hundred twenty-seven".