999670877 has 2 divisors, whose sum is σ = 999670878. Its totient is φ = 999670876.

The previous prime is 999670849. The next prime is 999670943. The reversal of 999670877 is 778076999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 956912356 + 42758521 = 30934^2 + 6539^2 .

It is a cyclic number.

It is not a de Polignac number, because 999670877 - 2⁶ = 999670813 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999670817) 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, 499835438 + 499835439.

It is an arithmetic number, because the mean of its divisors is an integer number (499835439).

Almost surely, 2^999670877 is an apocalyptic number.

It is an amenable number.

999670877 is a deficient number, since it is larger than the sum of its proper divisors (1).

999670877 is an equidigital number, since it uses as much as digits as its factorization.

999670877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12002256, while the sum is 62.

The square root of 999670877 is about 31617.5722818815. The cubic root of 999670877 is about 999.8902802954.

The spelling of 999670877 in words is "nine hundred ninety-nine million, six hundred seventy thousand, eight hundred seventy-seven".