999769079 has 2 divisors, whose sum is σ = 999769080. Its totient is φ = 999769078.

The previous prime is 999769061. The next prime is 999769081. The reversal of 999769079 is 970967999.

It is a strong prime.

It is an emirp because it is prime and its reverse (970967999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999769079 - 2²⁸ = 731333623 is a prime.

It is a super-2 number, since 2×999769079² = 1999076422649016482, which contains 22 as substring.

Together with 999769081, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999769579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499884539 + 499884540.

It is an arithmetic number, because the mean of its divisors is an integer number (499884540).

Almost surely, 2^999769079 is an apocalyptic number.

999769079 is a deficient number, since it is larger than the sum of its proper divisors (1).

999769079 is an equidigital number, since it uses as much as digits as its factorization.

999769079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17360406, while the sum is 65.

The square root of 999769079 is about 31619.1252092780. The cubic root of 999769079 is about 999.9230204076.

The spelling of 999769079 in words is "nine hundred ninety-nine million, seven hundred sixty-nine thousand, seventy-nine".