971399 has 8 divisors (see below), whose sum is σ = 1141392. Its totient is φ = 815040.

The previous prime is 971389. The next prime is 971401. The reversal of 971399 is 993179.

It is a happy number.

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 971399 - 2⁸ = 971143 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 (971309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3254 + ... + 3539.

It is an arithmetic number, because the mean of its divisors is an integer number (142674).

2⁹⁷¹³⁹⁹ is an apocalyptic number.

971399 is a deficient number, since it is larger than the sum of its proper divisors (169993).

971399 is a wasteful number, since it uses less digits than its factorization.

971399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6817.

The product of its digits is 15309, while the sum is 38.

The square root of 971399 is about 985.5957589194. The cubic root of 971399 is about 99.0373970201.

The spelling of 971399 in words is "nine hundred seventy-one thousand, three hundred ninety-nine".