99377749 has 2 divisors, whose sum is σ = 99377750. Its totient is φ = 99377748.

The previous prime is 99377743. The next prime is 99377753. The reversal of 99377749 is 94777399.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79530724 + 19847025 = 8918^2 + 4455^2 .

It is an emirp because it is prime and its reverse (94777399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99377749 - 2³ = 99377741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99377749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99377741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49688874 + 49688875.

It is an arithmetic number, because the mean of its divisors is an integer number (49688875).

Almost surely, 2^99377749 is an apocalyptic number.

It is an amenable number.

99377749 is a deficient number, since it is larger than the sum of its proper divisors (1).

99377749 is an equidigital number, since it uses as much as digits as its factorization.

99377749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3000564, while the sum is 55.

The square root of 99377749 is about 9968.8388992901. The cubic root of 99377749 is about 463.1941351026.

The spelling of 99377749 in words is "ninety-nine million, three hundred seventy-seven thousand, seven hundred forty-nine".