49905697 has 2 divisors, whose sum is σ = 49905698. Its totient is φ = 49905696.

The previous prime is 49905689. The next prime is 49905703. The reversal of 49905697 is 79650994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42458256 + 7447441 = 6516^2 + 2729^2 .

It is a cyclic number.

It is not a de Polignac number, because 49905697 - 2³ = 49905689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49905697.

It is not a weakly prime, because it can be changed into another prime (49905617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24952848 + 24952849.

It is an arithmetic number, because the mean of its divisors is an integer number (24952849).

Almost surely, 2^49905697 is an apocalyptic number.

It is an amenable number.

49905697 is a deficient number, since it is larger than the sum of its proper divisors (1).

49905697 is an equidigital number, since it uses as much as digits as its factorization.

49905697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 49.

The square root of 49905697 is about 7064.3964356483. The cubic root of 49905697 is about 368.1713939528.

The spelling of 49905697 in words is "forty-nine million, nine hundred five thousand, six hundred ninety-seven".