4791649 has 2 divisors, whose sum is σ = 4791650. Its totient is φ = 4791648.

The previous prime is 4791643. The next prime is 4791653. The reversal of 4791649 is 9461974.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4774225 + 17424 = 2185^2 + 132^2 .

It is a cyclic number.

It is not a de Polignac number, because 4791649 - 2¹¹ = 4789601 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (4791643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2395824 + 2395825.

It is an arithmetic number, because the mean of its divisors is an integer number (2395825).

Almost surely, 2^4791649 is an apocalyptic number.

It is an amenable number.

4791649 is a deficient number, since it is larger than the sum of its proper divisors (1).

4791649 is an equidigital number, since it uses as much as digits as its factorization.

4791649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 4791649 is about 2188.9835540725. The cubic root of 4791649 is about 168.5886497981.

The spelling of 4791649 in words is "four million, seven hundred ninety-one thousand, six hundred forty-nine".