869972151 has 4 divisors (see below), whose sum is σ = 1159962872. Its totient is φ = 579981432.

The previous prime is 869972137. The next prime is 869972203. The reversal of 869972151 is 151279968.

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

It is not a de Polignac number, because 869972151 - 2⁷ = 869972023 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 869972151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869972101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144995356 + ... + 144995361.

It is an arithmetic number, because the mean of its divisors is an integer number (289990718).

Almost surely, 2^869972151 is an apocalyptic number.

869972151 is a deficient number, since it is larger than the sum of its proper divisors (289990721).

869972151 is a wasteful number, since it uses less digits than its factorization.

869972151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289990720.

The product of its digits is 272160, while the sum is 48.

The square root of 869972151 is about 29495.2903189645. The cubic root of 869972151 is about 954.6300847059.

The spelling of 869972151 in words is "eight hundred sixty-nine million, nine hundred seventy-two thousand, one hundred fifty-one".