999197707 has 4 divisors (see below), whose sum is σ = 1051787080. Its totient is φ = 946608336.

The previous prime is 999197701. The next prime is 999197723. The reversal of 999197707 is 707791999.

999197707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 999197707 - 2²⁷ = 864979979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999197701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26294658 + ... + 26294695.

It is an arithmetic number, because the mean of its divisors is an integer number (262946770).

Almost surely, 2^999197707 is an apocalyptic number.

999197707 is a deficient number, since it is larger than the sum of its proper divisors (52589373).

999197707 is a wasteful number, since it uses less digits than its factorization.

999197707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52589372.

The product of its (nonzero) digits is 2250423, while the sum is 58.

The square root of 999197707 is about 31610.0886901635. The cubic root of 999197707 is about 999.7324974488.

The spelling of 999197707 in words is "nine hundred ninety-nine million, one hundred ninety-seven thousand, seven hundred seven".