99991703 has 8 divisors (see below), whose sum is σ = 116608800. Its totient is φ = 85706880.

The previous prime is 99991687. The next prime is 99991721. The reversal of 99991703 is 30719999.

It is a happy number.

It is not a de Polignac number, because 99991703 - 2⁴ = 99991687 is a prime.

It is a super-3 number, since 3×99991703³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99991733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145418 + ... + 146103.

It is an arithmetic number, because the mean of its divisors is an integer number (14576100).

Almost surely, 2^99991703 is an apocalyptic number.

99991703 is a deficient number, since it is larger than the sum of its proper divisors (16617097).

99991703 is an equidigital number, since it uses as much as digits as its factorization.

99991703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291542 (or 291528 counting only the distinct ones).

The product of its (nonzero) digits is 137781, while the sum is 47.

The square root of 99991703 is about 9999.5851413946. The cubic root of 99991703 is about 464.1460459187.

The spelling of 99991703 in words is "ninety-nine million, nine hundred ninety-one thousand, seven hundred three".