387401243 has 4 divisors (see below), whose sum is σ = 387440640. Its totient is φ = 387361848.

The previous prime is 387401207. The next prime is 387401281. The reversal of 387401243 is 342104783.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 387401243 - 2¹² = 387397147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387401143) 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, 8678 + ... + 29156.

It is an arithmetic number, because the mean of its divisors is an integer number (96860160).

Almost surely, 2^387401243 is an apocalyptic number.

387401243 is a deficient number, since it is larger than the sum of its proper divisors (39397).

387401243 is a wasteful number, since it uses less digits than its factorization.

387401243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39396.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 387401243 is about 19682.5110948781. The cubic root of 387401243 is about 728.9879282186.

The spelling of 387401243 in words is "three hundred eighty-seven million, four hundred one thousand, two hundred forty-three".