422911913 has 4 divisors (see below), whose sum is σ = 423837780. Its totient is φ = 421986048.

The previous prime is 422911897. The next prime is 422911939. The reversal of 422911913 is 319119224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 231283264 + 191628649 = 15208^2 + 13843^2 .

It is a cyclic number.

It is not a de Polignac number, because 422911913 - 2⁴ = 422911897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 422911913.

It is not an unprimeable number, because it can be changed into a prime (422911213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462248 + ... + 463161.

It is an arithmetic number, because the mean of its divisors is an integer number (105959445).

Almost surely, 2^422911913 is an apocalyptic number.

It is an amenable number.

422911913 is a deficient number, since it is larger than the sum of its proper divisors (925867).

422911913 is an equidigital number, since it uses as much as digits as its factorization.

422911913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925866.

The product of its digits is 3888, while the sum is 32.

The square root of 422911913 is about 20564.8222214538. The cubic root of 422911913 is about 750.6139642231.

The spelling of 422911913 in words is "four hundred twenty-two million, nine hundred eleven thousand, nine hundred thirteen".