4423625491 has 2 divisors, whose sum is σ = 4423625492. Its totient is φ = 4423625490.

The previous prime is 4423625441. The next prime is 4423625509. The reversal of 4423625491 is 1945263244.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4423625491 - 2⁷ = 4423625363 is a prime.

It is not a weakly prime, because it can be changed into another prime (4423625441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2211812745 + 2211812746.

It is an arithmetic number, because the mean of its divisors is an integer number (2211812746).

Almost surely, 2^4423625491 is an apocalyptic number.

4423625491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4423625491 is an equidigital number, since it uses as much as digits as its factorization.

4423625491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 40.

The square root of 4423625491 is about 66510.3412335255. The cubic root of 4423625491 is about 1641.5701662270.

The spelling of 4423625491 in words is "four billion, four hundred twenty-three million, six hundred twenty-five thousand, four hundred ninety-one".