99938477 has 2 divisors, whose sum is σ = 99938478. Its totient is φ = 99938476.

The previous prime is 99938441. The next prime is 99938479. The reversal of 99938477 is 77483999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67059721 + 32878756 = 8189^2 + 5734^2 .

It is a cyclic number.

It is not a de Polignac number, because 99938477 - 2¹⁴ = 99922093 is a prime.

Together with 99938479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99938479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49969238 + 49969239.

It is an arithmetic number, because the mean of its divisors is an integer number (49969239).

Almost surely, 2^99938477 is an apocalyptic number.

It is an amenable number.

99938477 is a deficient number, since it is larger than the sum of its proper divisors (1).

99938477 is an equidigital number, since it uses as much as digits as its factorization.

99938477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 56.

The square root of 99938477 is about 9996.9233767195. The cubic root of 99938477 is about 464.0636756771.

The spelling of 99938477 in words is "ninety-nine million, nine hundred thirty-eight thousand, four hundred seventy-seven".