422369749 has 2 divisors, whose sum is σ = 422369750. Its totient is φ = 422369748.

The previous prime is 422369747. The next prime is 422369797. The reversal of 422369749 is 947963224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418488849 + 3880900 = 20457^2 + 1970^2 .

It is a cyclic number.

It is not a de Polignac number, because 422369749 - 2¹ = 422369747 is a prime.

Together with 422369747, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 422369699 and 422369708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422369747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211184874 + 211184875.

It is an arithmetic number, because the mean of its divisors is an integer number (211184875).

Almost surely, 2^422369749 is an apocalyptic number.

It is an amenable number.

422369749 is a deficient number, since it is larger than the sum of its proper divisors (1).

422369749 is an equidigital number, since it uses as much as digits as its factorization.

422369749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 46.

The square root of 422369749 is about 20551.6361635759. The cubic root of 422369749 is about 750.2930700576.

The spelling of 422369749 in words is "four hundred twenty-two million, three hundred sixty-nine thousand, seven hundred forty-nine".