869397 has 8 divisors (see below), whose sum is σ = 1227456. Its totient is φ = 545472.

The previous prime is 869381. The next prime is 869399. The reversal of 869397 is 793968.

It is a happy number.

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

It is not a de Polignac number, because 869397 - 2⁴ = 869381 is a prime.

It is a super-2 number, since 2×869397² = 1511702287218, which contains 22 as substring.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869399) 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, 8473 + ... + 8574.

It is an arithmetic number, because the mean of its divisors is an integer number (153432).

2⁸⁶⁹³⁹⁷ is an apocalyptic number.

It is an amenable number.

869397 is a deficient number, since it is larger than the sum of its proper divisors (358059).

869397 is a wasteful number, since it uses less digits than its factorization.

869397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17067.

The product of its digits is 81648, while the sum is 42.

The square root of 869397 is about 932.4146073502. The cubic root of 869397 is about 95.4419665139.

The spelling of 869397 in words is "eight hundred sixty-nine thousand, three hundred ninety-seven".