99956377 has 2 divisors, whose sum is σ = 99956378. Its totient is φ = 99956376.

The previous prime is 99956371. The next prime is 99956387. The reversal of 99956377 is 77365999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87254281 + 12702096 = 9341^2 + 3564^2 .

It is an emirp because it is prime and its reverse (77365999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99956377 - 2⁷ = 99956249 is a prime.

It is a super-2 number, since 2×99956377² = 19982554605932258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99956371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49978188 + 49978189.

It is an arithmetic number, because the mean of its divisors is an integer number (49978189).

Almost surely, 2^99956377 is an apocalyptic number.

It is an amenable number.

99956377 is a deficient number, since it is larger than the sum of its proper divisors (1).

99956377 is an equidigital number, since it uses as much as digits as its factorization.

99956377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3214890, while the sum is 55.

The square root of 99956377 is about 9997.8186120773. The cubic root of 99956377 is about 464.0913802015.

The spelling of 99956377 in words is "ninety-nine million, nine hundred fifty-six thousand, three hundred seventy-seven".