1077979949 has 2 divisors, whose sum is σ = 1077979950. Its totient is φ = 1077979948.

The previous prime is 1077979933. The next prime is 1077979961. The reversal of 1077979949 is 9499797701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 991620100 + 86359849 = 31490^2 + 9293^2 .

It is a cyclic number.

It is not a de Polignac number, because 1077979949 - 2⁴ = 1077979933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1077979891 and 1077979900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1077979999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538989974 + 538989975.

It is an arithmetic number, because the mean of its divisors is an integer number (538989975).

Almost surely, 2^1077979949 is an apocalyptic number.

It is an amenable number.

1077979949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1077979949 is an equidigital number, since it uses as much as digits as its factorization.

1077979949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9001692, while the sum is 62.

The square root of 1077979949 is about 32832.6049682324. The cubic root of 1077979949 is about 1025.3454949533.

The spelling of 1077979949 in words is "one billion, seventy-seven million, nine hundred seventy-nine thousand, nine hundred forty-nine".