869897149 has 8 divisors (see below), whose sum is σ = 964536480. Its totient is φ = 777850800.

The previous prime is 869897141. The next prime is 869897153. The reversal of 869897149 is 941798968.

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 869897149 - 2³ = 869897141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869897141) 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 7 ways as a sum of consecutive naturals, for example, 647539 + ... + 648880.

It is an arithmetic number, because the mean of its divisors is an integer number (120567060).

Almost surely, 2^869897149 is an apocalyptic number.

It is an amenable number.

869897149 is a deficient number, since it is larger than the sum of its proper divisors (94639331).

869897149 is a wasteful number, since it uses less digits than its factorization.

869897149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296491.

The product of its digits is 7838208, while the sum is 61.

The square root of 869897149 is about 29494.0188682384. The cubic root of 869897149 is about 954.6026504088.

The spelling of 869897149 in words is "eight hundred sixty-nine million, eight hundred ninety-seven thousand, one hundred forty-nine".