869939901 has 6 divisors (see below), whose sum is σ = 1256579870. Its totient is φ = 579959928.

The previous prime is 869939899. The next prime is 869939911. The reversal of 869939901 is 109939968.

It can be written as a sum of positive squares in only one way, i.e., 445167801 + 424772100 = 21099^2 + 20610^2 .

It is not a de Polignac number, because 869939901 - 2¹ = 869939899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869939911) 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 5 ways as a sum of consecutive naturals, for example, 48329986 + ... + 48330003.

Almost surely, 2^869939901 is an apocalyptic number.

It is an amenable number.

869939901 is a deficient number, since it is larger than the sum of its proper divisors (386639969).

869939901 is a wasteful number, since it uses less digits than its factorization.

869939901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96659995 (or 96659992 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 54.

The square root of 869939901 is about 29494.7436164480. The cubic root of 869939901 is about 954.6182884660.

The spelling of 869939901 in words is "eight hundred sixty-nine million, nine hundred thirty-nine thousand, nine hundred one".