840387514 has 4 divisors (see below), whose sum is σ = 1260581274. Its totient is φ = 420193756.

The previous prime is 840387511. The next prime is 840387529. The reversal of 840387514 is 415783048.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 472323289 + 368064225 = 21733^2 + 19185^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (840387511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210096877 + ... + 210096880.

Almost surely, 2^840387514 is an apocalyptic number.

840387514 is a deficient number, since it is larger than the sum of its proper divisors (420193760).

840387514 is a wasteful number, since it uses less digits than its factorization.

840387514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420193759.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 840387514 is about 28989.4379731653. The cubic root of 840387514 is about 943.6838668101.

The spelling of 840387514 in words is "eight hundred forty million, three hundred eighty-seven thousand, five hundred fourteen".