999995377 has 2 divisors, whose sum is σ = 999995378. Its totient is φ = 999995376.

The previous prime is 999995341. The next prime is 999995393. The reversal of 999995377 is 773599999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 971007921 + 28987456 = 31161^2 + 5384^2 .

It is a cyclic number.

It is not a de Polignac number, because 999995377 - 2²³ = 991606769 is a prime.

It is not a weakly prime, because it can be changed into another prime (999995677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499997688 + 499997689.

It is an arithmetic number, because the mean of its divisors is an integer number (499997689).

Almost surely, 2^999995377 is an apocalyptic number.

It is an amenable number.

999995377 is a deficient number, since it is larger than the sum of its proper divisors (1).

999995377 is an equidigital number, since it uses as much as digits as its factorization.

999995377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43401015, while the sum is 67.

The square root of 999995377 is about 31622.7035055512. The cubic root of 999995377 is about 999.9984589976.

The spelling of 999995377 in words is "nine hundred ninety-nine million, nine hundred ninety-five thousand, three hundred seventy-seven".