999377 has 2 divisors, whose sum is σ = 999378. Its totient is φ = 999376.

The previous prime is 999371. The next prime is 999389. The reversal of 999377 is 773999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 891136 + 108241 = 944^2 + 329^2 .

It is an emirp because it is prime and its reverse (773999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999377 - 2¹⁰ = 998353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (999371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499688 + 499689.

It is an arithmetic number, because the mean of its divisors is an integer number (499689).

2⁹⁹⁹³⁷⁷ is an apocalyptic number.

It is an amenable number.

999377 is a deficient number, since it is larger than the sum of its proper divisors (1).

999377 is an equidigital number, since it uses as much as digits as its factorization.

999377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107163, while the sum is 44.

The square root of 999377 is about 999.6884514688. The cubic root of 999377 is about 99.9792290193.

The spelling of 999377 in words is "nine hundred ninety-nine thousand, three hundred seventy-seven".