99977693 has 2 divisors, whose sum is σ = 99977694. Its totient is φ = 99977692.

The previous prime is 99977653. The next prime is 99977707. The reversal of 99977693 is 39677999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99960004 + 17689 = 9998^2 + 133^2 .

It is a cyclic number.

It is not a de Polignac number, because 99977693 - 2¹² = 99973597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99977653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49988846 + 49988847.

It is an arithmetic number, because the mean of its divisors is an integer number (49988847).

Almost surely, 2^99977693 is an apocalyptic number.

It is an amenable number.

99977693 is a deficient number, since it is larger than the sum of its proper divisors (1).

99977693 is an equidigital number, since it uses as much as digits as its factorization.

99977693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5786802, while the sum is 59.

The square root of 99977693 is about 9998.8845877928. The cubic root of 99977693 is about 464.1243674873.

The spelling of 99977693 in words is "ninety-nine million, nine hundred seventy-seven thousand, six hundred ninety-three".