978269 has 2 divisors, whose sum is σ = 978270. Its totient is φ = 978268.

The previous prime is 978239. The next prime is 978277. The reversal of 978269 is 962879.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 743044 + 235225 = 862^2 + 485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-978269 is a prime.

It is a super-2 number, since 2×978269² = 1914020472722, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489134 + 489135.

It is an arithmetic number, because the mean of its divisors is an integer number (489135).

2⁹⁷⁸²⁶⁹ is an apocalyptic number.

It is an amenable number.

978269 is a deficient number, since it is larger than the sum of its proper divisors (1).

978269 is an equidigital number, since it uses as much as digits as its factorization.

978269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 41.

The square root of 978269 is about 989.0748202234. The cubic root of 978269 is about 99.2703219833.

The spelling of 978269 in words is "nine hundred seventy-eight thousand, two hundred sixty-nine".