99391463 has 2 divisors, whose sum is σ = 99391464. Its totient is φ = 99391462.

The previous prime is 99391433. The next prime is 99391477. The reversal of 99391463 is 36419399.

It is a strong prime.

It is an emirp because it is prime and its reverse (36419399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99391463 - 2⁶ = 99391399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99391423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49695731 + 49695732.

It is an arithmetic number, because the mean of its divisors is an integer number (49695732).

Almost surely, 2^99391463 is an apocalyptic number.

99391463 is a deficient number, since it is larger than the sum of its proper divisors (1).

99391463 is an equidigital number, since it uses as much as digits as its factorization.

99391463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 44.

The square root of 99391463 is about 9969.5267189571. The cubic root of 99391463 is about 463.2154408518.

The spelling of 99391463 in words is "ninety-nine million, three hundred ninety-one thousand, four hundred sixty-three".