984378953 has 2 divisors, whose sum is σ = 984378954. Its totient is φ = 984378952.

The previous prime is 984378883. The next prime is 984378959. The reversal of 984378953 is 359873489.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 954315664 + 30063289 = 30892^2 + 5483^2 .

It is an emirp because it is prime and its reverse (359873489) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 984378953 - 2¹⁰ = 984377929 is a prime.

It is not a weakly prime, because it can be changed into another prime (984378959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492189476 + 492189477.

It is an arithmetic number, because the mean of its divisors is an integer number (492189477).

Almost surely, 2^984378953 is an apocalyptic number.

It is an amenable number.

984378953 is a deficient number, since it is larger than the sum of its proper divisors (1).

984378953 is an equidigital number, since it uses as much as digits as its factorization.

984378953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 56.

The square root of 984378953 is about 31374.8139914805. The cubic root of 984378953 is about 994.7656335459.

The spelling of 984378953 in words is "nine hundred eighty-four million, three hundred seventy-eight thousand, nine hundred fifty-three".