840972151 has 8 divisors (see below), whose sum is σ = 846475344. Its totient is φ = 835486080.

The previous prime is 840972137. The next prime is 840972163. The reversal of 840972151 is 151279048.

840972151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 840972151 - 2¹⁵ = 840939383 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 840972151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840972751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102825 + ... + 110701.

It is an arithmetic number, because the mean of its divisors is an integer number (105809418).

Almost surely, 2^840972151 is an apocalyptic number.

840972151 is a deficient number, since it is larger than the sum of its proper divisors (5503193).

840972151 is a wasteful number, since it uses less digits than its factorization.

840972151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8561.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 840972151 is about 28999.5198408525. The cubic root of 840972151 is about 943.9026486646.

The spelling of 840972151 in words is "eight hundred forty million, nine hundred seventy-two thousand, one hundred fifty-one".