2905904247 has 8 divisors (see below), whose sum is σ = 3875086320. Its totient is φ = 1936995840.

The previous prime is 2905904219. The next prime is 2905904263. The reversal of 2905904247 is 7424095092.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2905904247 - 2¹⁴ = 2905887863 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2905904199 and 2905904208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2905904347) 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 in 7 ways as a sum of consecutive naturals, for example, 42204 + ... + 87137.

It is an arithmetic number, because the mean of its divisors is an integer number (484385790).

Almost surely, 2^2905904247 is an apocalyptic number.

2905904247 is a deficient number, since it is larger than the sum of its proper divisors (969182073).

2905904247 is a wasteful number, since it uses less digits than its factorization.

2905904247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136833.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 2905904247 is about 53906.4397544486. The cubic root of 2905904247 is about 1427.0102739698.

The spelling of 2905904247 in words is "two billion, nine hundred five million, nine hundred four thousand, two hundred forty-seven".