978862453 has 2 divisors, whose sum is σ = 978862454. Its totient is φ = 978862452.

The previous prime is 978862441. The next prime is 978862471. The reversal of 978862453 is 354268879.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 842276484 + 136585969 = 29022^2 + 11687^2 .

It is a cyclic number.

It is not a de Polignac number, because 978862453 - 2⁵ = 978862421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 978862453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (978862153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489431226 + 489431227.

It is an arithmetic number, because the mean of its divisors is an integer number (489431227).

Almost surely, 2^978862453 is an apocalyptic number.

It is an amenable number.

978862453 is a deficient number, since it is larger than the sum of its proper divisors (1).

978862453 is an equidigital number, since it uses as much as digits as its factorization.

978862453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 52.

The square root of 978862453 is about 31286.7776065225. Note that the first 3 decimals coincide. The cubic root of 978862453 is about 992.9039156939.

The spelling of 978862453 in words is "nine hundred seventy-eight million, eight hundred sixty-two thousand, four hundred fifty-three".