974539 has 2 divisors, whose sum is σ = 974540. Its totient is φ = 974538.

The previous prime is 974537. The next prime is 974551. The reversal of 974539 is 935479.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 974539 - 2¹ = 974537 is a prime.

Together with 974537, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 974498 and 974507.

It is not a weakly prime, because it can be changed into another prime (974531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487269 + 487270.

It is an arithmetic number, because the mean of its divisors is an integer number (487270).

2⁹⁷⁴⁵³⁹ is an apocalyptic number.

974539 is a deficient number, since it is larger than the sum of its proper divisors (1).

974539 is an equidigital number, since it uses as much as digits as its factorization.

974539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 37.

The square root of 974539 is about 987.1874188826. The cubic root of 974539 is about 99.1439934355.

Subtracting from 974539 its reverse (935479), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 974539 in words is "nine hundred seventy-four thousand, five hundred thirty-nine".