977252779 has 2 divisors, whose sum is σ = 977252780. Its totient is φ = 977252778.

The previous prime is 977252777. The next prime is 977252797.

It is a happy number.

977252779 is nontrivially palindromic in base 10.

Together with next prime (977252797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 977252779 - 2¹ = 977252777 is a prime.

Together with 977252777, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (977252777) 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, 488626389 + 488626390.

It is an arithmetic number, because the mean of its divisors is an integer number (488626390).

Almost surely, 2^977252779 is an apocalyptic number.

977252779 is a deficient number, since it is larger than the sum of its proper divisors (1).

977252779 is an equidigital number, since it uses as much as digits as its factorization.

977252779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3889620, while the sum is 55.

The square root of 977252779 is about 31261.0425130065. The cubic root of 977252779 is about 992.3593623413.

The spelling of 977252779 in words is "nine hundred seventy-seven million, two hundred fifty-two thousand, seven hundred seventy-nine".