978974201 has 2 divisors, whose sum is σ = 978974202. Its totient is φ = 978974200.

The previous prime is 978974167. The next prime is 978974209. The reversal of 978974201 is 102479879.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 960690025 + 18284176 = 30995^2 + 4276^2 .

It is a cyclic number.

It is not a de Polignac number, because 978974201 - 2¹⁴ = 978957817 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (978974209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489487100 + 489487101.

It is an arithmetic number, because the mean of its divisors is an integer number (489487101).

Almost surely, 2^978974201 is an apocalyptic number.

It is an amenable number.

978974201 is a deficient number, since it is larger than the sum of its proper divisors (1).

978974201 is an equidigital number, since it uses as much as digits as its factorization.

978974201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 978974201 is about 31288.5634218000. The cubic root of 978974201 is about 992.9416979191.

The spelling of 978974201 in words is "nine hundred seventy-eight million, nine hundred seventy-four thousand, two hundred one".