99977249 has 2 divisors, whose sum is σ = 99977250. Its totient is φ = 99977248.

The previous prime is 99977233. The next prime is 99977291. The reversal of 99977249 is 94277999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99361024 + 616225 = 9968^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 99977249 - 2⁴ = 99977233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99977194 and 99977203.

It is not a weakly prime, because it can be changed into another prime (99977209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49988624 + 49988625.

It is an arithmetic number, because the mean of its divisors is an integer number (49988625).

Almost surely, 2^99977249 is an apocalyptic number.

It is an amenable number.

99977249 is a deficient number, since it is larger than the sum of its proper divisors (1).

99977249 is an equidigital number, since it uses as much as digits as its factorization.

99977249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2571912, while the sum is 56.

The square root of 99977249 is about 9998.8623852916. The cubic root of 99977249 is about 464.1236804290.

The spelling of 99977249 in words is "ninety-nine million, nine hundred seventy-seven thousand, two hundred forty-nine".