1147979953 has 2 divisors, whose sum is σ = 1147979954. Its totient is φ = 1147979952.

The previous prime is 1147979897. The next prime is 1147979983. The reversal of 1147979953 is 3599797411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 756415009 + 391564944 = 27503^2 + 19788^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1147979953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1147979894 and 1147979903.

It is not a weakly prime, because it can be changed into another prime (1147979983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573989976 + 573989977.

It is an arithmetic number, because the mean of its divisors is an integer number (573989977).

Almost surely, 2^1147979953 is an apocalyptic number.

It is an amenable number.

1147979953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147979953 is an equidigital number, since it uses as much as digits as its factorization.

1147979953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2143260, while the sum is 55.

The square root of 1147979953 is about 33881.8528566547. The cubic root of 1147979953 is about 1047.0757495382.

It can be divided in two parts, 114797 and 9953, that added together give a triangular number (124750 = T₄₉₉).

The spelling of 1147979953 in words is "one billion, one hundred forty-seven million, nine hundred seventy-nine thousand, nine hundred fifty-three".