978349 has 2 divisors, whose sum is σ = 978350. Its totient is φ = 978348.

The previous prime is 978347. The next prime is 978359. The reversal of 978349 is 943879.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 915849 + 62500 = 957^2 + 250^2 .

It is a cyclic number.

It is not a de Polignac number, because 978349 - 2¹ = 978347 is a prime.

Together with 978347, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489174 + 489175.

It is an arithmetic number, because the mean of its divisors is an integer number (489175).

2⁹⁷⁸³⁴⁹ is an apocalyptic number.

It is an amenable number.

978349 is a deficient number, since it is larger than the sum of its proper divisors (1).

978349 is an equidigital number, since it uses as much as digits as its factorization.

978349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 978349 is about 989.1152612310. The cubic root of 978349 is about 99.2730279225.

The spelling of 978349 in words is "nine hundred seventy-eight thousand, three hundred forty-nine".