978413279 has 2 divisors, whose sum is σ = 978413280. Its totient is φ = 978413278.

The previous prime is 978413239. The next prime is 978413287. The reversal of 978413279 is 972314879.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 978413279 - 2²⁴ = 961636063 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978413239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489206639 + 489206640.

It is an arithmetic number, because the mean of its divisors is an integer number (489206640).

Almost surely, 2^978413279 is an apocalyptic number.

978413279 is a deficient number, since it is larger than the sum of its proper divisors (1).

978413279 is an equidigital number, since it uses as much as digits as its factorization.

978413279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 50.

The square root of 978413279 is about 31279.5984469110. The cubic root of 978413279 is about 992.7520200397.

The spelling of 978413279 in words is "nine hundred seventy-eight million, four hundred thirteen thousand, two hundred seventy-nine".