991098899367 has 16 divisors (see below), whose sum is σ = 1353822543360. Its totient is φ = 644556939200.

The previous prime is 991098899353. The next prime is 991098899381. The reversal of 991098899367 is 763998890199.

It is an interprime number because it is at equal distance from previous prime (991098899353) and next prime (991098899381).

It is a cyclic number.

It is not a de Polignac number, because 991098899367 - 2⁶ = 991098899303 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 991098899292 and 991098899301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (991098899327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 964642 + ... + 1706672.

It is an arithmetic number, because the mean of its divisors is an integer number (84613908960).

Almost surely, 2^991098899367 is an apocalyptic number.

991098899367 is a deficient number, since it is larger than the sum of its proper divisors (362723643993).

991098899367 is a wasteful number, since it uses less digits than its factorization.

991098899367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752934.

The product of its (nonzero) digits is 476171136, while the sum is 78.

The spelling of 991098899367 in words is "nine hundred ninety-one billion, ninety-eight million, eight hundred ninety-nine thousand, three hundred sixty-seven".