387801943 has 4 divisors (see below), whose sum is σ = 410613840. Its totient is φ = 364990048.

The previous prime is 387801941. The next prime is 387801961. The reversal of 387801943 is 349108783.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 349108783 = 1193 ⋅292631.

It is a cyclic number.

It is not a de Polignac number, because 387801943 - 2¹ = 387801941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 387801943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387801941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11405923 + ... + 11405956.

It is an arithmetic number, because the mean of its divisors is an integer number (102653460).

Almost surely, 2^387801943 is an apocalyptic number.

387801943 is a deficient number, since it is larger than the sum of its proper divisors (22811897).

387801943 is a wasteful number, since it uses less digits than its factorization.

387801943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22811896.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 387801943 is about 19692.6875514745. The cubic root of 387801943 is about 729.2391791847.

The spelling of 387801943 in words is "three hundred eighty-seven million, eight hundred one thousand, nine hundred forty-three".