7799400149 has 2 divisors, whose sum is σ = 7799400150. Its totient is φ = 7799400148.

The previous prime is 7799400113. The next prime is 7799400173. The reversal of 7799400149 is 9410049977.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7665002500 + 134397649 = 87550^2 + 11593^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7799400149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7799400097 and 7799400106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7799403149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3899700074 + 3899700075.

It is an arithmetic number, because the mean of its divisors is an integer number (3899700075).

Almost surely, 2^7799400149 is an apocalyptic number.

It is an amenable number.

7799400149 is a deficient number, since it is larger than the sum of its proper divisors (1).

7799400149 is an equidigital number, since it uses as much as digits as its factorization.

7799400149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 7799400149 is about 88314.2126104287. The cubic root of 7799400149 is about 1983.1416429162.

The spelling of 7799400149 in words is "seven billion, seven hundred ninety-nine million, four hundred thousand, one hundred forty-nine".