979251853 has 2 divisors, whose sum is σ = 979251854. Its totient is φ = 979251852.

The previous prime is 979251829. The next prime is 979251859. The reversal of 979251853 is 358152979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 979251849 + 4 = 31293^2 + 2^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-979251853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 979251797 and 979251806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979251859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489625926 + 489625927.

It is an arithmetic number, because the mean of its divisors is an integer number (489625927).

Almost surely, 2^979251853 is an apocalyptic number.

It is an amenable number.

979251853 is a deficient number, since it is larger than the sum of its proper divisors (1).

979251853 is an equidigital number, since it uses as much as digits as its factorization.

979251853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 49.

The square root of 979251853 is about 31293.0000639121. Note that the first 4 decimals coincide. The cubic root of 979251853 is about 993.0355601777.

The spelling of 979251853 in words is "nine hundred seventy-nine million, two hundred fifty-one thousand, eight hundred fifty-three".