975391 has 4 divisors (see below), whose sum is σ = 996192. Its totient is φ = 954592.

The previous prime is 975389. The next prime is 975421. The reversal of 975391 is 193579.

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

It is a cyclic number.

It is not a de Polignac number, because 975391 - 2¹ = 975389 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 (975691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10330 + ... + 10423.

It is an arithmetic number, because the mean of its divisors is an integer number (249048).

2⁹⁷⁵³⁹¹ is an apocalyptic number.

975391 is a deficient number, since it is larger than the sum of its proper divisors (20801).

975391 is a wasteful number, since it uses less digits than its factorization.

975391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20800.

The product of its digits is 8505, while the sum is 34.

The square root of 975391 is about 987.6188536070. The cubic root of 975391 is about 99.1728775465.

The spelling of 975391 in words is "nine hundred seventy-five thousand, three hundred ninety-one".