4749991 has 2 divisors, whose sum is σ = 4749992. Its totient is φ = 4749990.

The previous prime is 4749989. The next prime is 4750001. The reversal of 4749991 is 1999474.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4749991 - 2¹ = 4749989 is a prime.

Together with 4749989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4749911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2374995 + 2374996.

It is an arithmetic number, because the mean of its divisors is an integer number (2374996).

Almost surely, 2^4749991 is an apocalyptic number.

4749991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4749991 is an equidigital number, since it uses as much as digits as its factorization.

4749991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 43.

The square root of 4749991 is about 2179.4474070278. The cubic root of 4749991 is about 168.0986641722.

The spelling of 4749991 in words is "four million, seven hundred forty-nine thousand, nine hundred ninety-one".