387434 has 8 divisors (see below), whose sum is σ = 583968. Its totient is φ = 192780.

The previous prime is 387433. The next prime is 387437. The reversal of 387434 is 434783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 387397 and 387406.

It is not an unprimeable number, because it can be changed into a prime (387433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299 + ... + 929.

It is an arithmetic number, because the mean of its divisors is an integer number (72996).

2³⁸⁷⁴³⁴ is an apocalyptic number.

387434 is a deficient number, since it is larger than the sum of its proper divisors (196534).

387434 is a wasteful number, since it uses less digits than its factorization.

387434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940.

The product of its digits is 8064, while the sum is 29.

The square root of 387434 is about 622.4419651662. The cubic root of 387434 is about 72.9008474345.

The spelling of 387434 in words is "three hundred eighty-seven thousand, four hundred thirty-four".