840151983 has 8 divisors (see below), whose sum is σ = 1222039296. Its totient is φ = 509183000.

The previous prime is 840151943. The next prime is 840151997. The reversal of 840151983 is 389151048.

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

It is a cyclic number.

It is not a de Polignac number, because 840151983 - 2⁸ = 840151727 is a prime.

It is a super-3 number, since 3×840151983³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840151913) 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 7 ways as a sum of consecutive naturals, for example, 12729543 + ... + 12729608.

It is an arithmetic number, because the mean of its divisors is an integer number (152754912).

Almost surely, 2^840151983 is an apocalyptic number.

840151983 is a deficient number, since it is larger than the sum of its proper divisors (381887313).

840151983 is a wasteful number, since it uses less digits than its factorization.

840151983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25459165.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 840151983 is about 28985.3753296382. The cubic root of 840151983 is about 943.5956981304.

The spelling of 840151983 in words is "eight hundred forty million, one hundred fifty-one thousand, nine hundred eighty-three".