4907994251 has 4 divisors (see below), whose sum is σ = 4908800904. Its totient is φ = 4907187600.

The previous prime is 4907994227. The next prime is 4907994277. The reversal of 4907994251 is 1524997094.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4907994251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4907994251.

It is not an unprimeable number, because it can be changed into a prime (4907994151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394130 + ... + 406391.

It is an arithmetic number, because the mean of its divisors is an integer number (1227200226).

Almost surely, 2^4907994251 is an apocalyptic number.

4907994251 is a deficient number, since it is larger than the sum of its proper divisors (806653).

4907994251 is an equidigital number, since it uses as much as digits as its factorization.

4907994251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806652.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 4907994251 is about 70057.0785217311. The cubic root of 4907994251 is about 1699.4224394411.

The spelling of 4907994251 in words is "four billion, nine hundred seven million, nine hundred ninety-four thousand, two hundred fifty-one".