1979486947 has 2 divisors, whose sum is σ = 1979486948. Its totient is φ = 1979486946.

The previous prime is 1979486923. The next prime is 1979486969. The reversal of 1979486947 is 7496849791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1979486947 - 2⁷ = 1979486819 is a prime.

It is a super-3 number, since 3×1979486947³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1979486917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989743473 + 989743474.

It is an arithmetic number, because the mean of its divisors is an integer number (989743474).

Almost surely, 2^1979486947 is an apocalyptic number.

1979486947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979486947 is an equidigital number, since it uses as much as digits as its factorization.

1979486947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27433728, while the sum is 64.

The square root of 1979486947 is about 44491.4255447047. The cubic root of 1979486947 is about 1255.5987676275.

The spelling of 1979486947 in words is "one billion, nine hundred seventy-nine million, four hundred eighty-six thousand, nine hundred forty-seven".