387996863 has 4 divisors (see below), whose sum is σ = 392671608. Its totient is φ = 383322120.

The previous prime is 387996857. The next prime is 387996871. The reversal of 387996863 is 368699783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368699783 = 37 ⋅9964859.

It is a cyclic number.

It is not a de Polignac number, because 387996863 - 2¹⁴ = 387980479 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 (387996883) 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, 2337248 + ... + 2337413.

It is an arithmetic number, because the mean of its divisors is an integer number (98167902).

Almost surely, 2^387996863 is an apocalyptic number.

387996863 is a deficient number, since it is larger than the sum of its proper divisors (4674745).

387996863 is an equidigital number, since it uses as much as digits as its factorization.

387996863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4674744.

The product of its digits is 11757312, while the sum is 59.

The square root of 387996863 is about 19697.6359749083. The cubic root of 387996863 is about 729.3613373249.

The spelling of 387996863 in words is "three hundred eighty-seven million, nine hundred ninety-six thousand, eight hundred sixty-three".