49149787397 has 2 divisors, whose sum is σ = 49149787398. Its totient is φ = 49149787396.

The previous prime is 49149787363. The next prime is 49149787399. The reversal of 49149787397 is 79378794194.

It is a happy number.

49149787397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46276184161 + 2873603236 = 215119^2 + 53606^2 .

It is a cyclic number.

It is not a de Polignac number, because 49149787397 - 2¹⁰ = 49149786373 is a prime.

Together with 49149787399, 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 (49149787399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24574893698 + 24574893699.

It is an arithmetic number, because the mean of its divisors is an integer number (24574893699).

Almost surely, 2^49149787397 is an apocalyptic number.

It is an amenable number.

49149787397 is a deficient number, since it is larger than the sum of its proper divisors (1).

49149787397 is an equidigital number, since it uses as much as digits as its factorization.

49149787397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96018048, while the sum is 68.

The spelling of 49149787397 in words is "forty-nine billion, one hundred forty-nine million, seven hundred eighty-seven thousand, three hundred ninety-seven".