4991407 has 2 divisors, whose sum is σ = 4991408. Its totient is φ = 4991406.

The previous prime is 4991401. The next prime is 4991417. The reversal of 4991407 is 7041994.

4991407 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4991407 - 2¹¹ = 4989359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4991401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2495703 + 2495704.

It is an arithmetic number, because the mean of its divisors is an integer number (2495704).

Almost surely, 2^4991407 is an apocalyptic number.

4991407 is a deficient number, since it is larger than the sum of its proper divisors (1).

4991407 is an equidigital number, since it uses as much as digits as its factorization.

4991407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 4991407 is about 2234.1456980242. The cubic root of 4991407 is about 170.8995796746.

The spelling of 4991407 in words is "four million, nine hundred ninety-one thousand, four hundred seven".