1979335987 has 2 divisors, whose sum is σ = 1979335988. Its totient is φ = 1979335986.

The previous prime is 1979335931. The next prime is 1979336017. The reversal of 1979335987 is 7895339791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1979335987 - 2¹⁵ = 1979303219 is a prime.

It is not a weakly prime, because it can be changed into another prime (1979335907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989667993 + 989667994.

It is an arithmetic number, because the mean of its divisors is an integer number (989667994).

Almost surely, 2^1979335987 is an apocalyptic number.

1979335987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979335987 is an equidigital number, since it uses as much as digits as its factorization.

1979335987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12859560, while the sum is 61.

The square root of 1979335987 is about 44489.7290056930. The cubic root of 1979335987 is about 1255.5668485809.

The spelling of 1979335987 in words is "one billion, nine hundred seventy-nine million, three hundred thirty-five thousand, nine hundred eighty-seven".