387434758 has 4 divisors (see below), whose sum is σ = 581152140. Its totient is φ = 193717378.

The previous prime is 387434753. The next prime is 387434759. The reversal of 387434758 is 857434783.

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: 857434783 = 7949 ⋅107867.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387434753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96858688 + ... + 96858691.

It is an arithmetic number, because the mean of its divisors is an integer number (145288035).

Almost surely, 2^387434758 is an apocalyptic number.

387434758 is a deficient number, since it is larger than the sum of its proper divisors (193717382).

387434758 is a wasteful number, since it uses less digits than its factorization.

387434758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193717381.

The product of its digits is 2257920, while the sum is 49.

The square root of 387434758 is about 19683.3624668145. The cubic root of 387434758 is about 729.0089497704.

The spelling of 387434758 in words is "three hundred eighty-seven million, four hundred thirty-four thousand, seven hundred fifty-eight".