99991363 has 2 divisors, whose sum is σ = 99991364. Its totient is φ = 99991362.

The previous prime is 99991343. The next prime is 99991379. The reversal of 99991363 is 36319999.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99991363 - 2¹⁷ = 99860291 is a prime.

It is not a weakly prime, because it can be changed into another prime (99991303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49995681 + 49995682.

It is an arithmetic number, because the mean of its divisors is an integer number (49995682).

Almost surely, 2^99991363 is an apocalyptic number.

99991363 is a deficient number, since it is larger than the sum of its proper divisors (1).

99991363 is an equidigital number, since it uses as much as digits as its factorization.

99991363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 354294, while the sum is 49.

The square root of 99991363 is about 9999.5681406749. The cubic root of 99991363 is about 464.1455198423.

The spelling of 99991363 in words is "ninety-nine million, nine hundred ninety-one thousand, three hundred sixty-three".