422918497 has 8 divisors (see below), whose sum is σ = 424901672. Its totient is φ = 420940800.

The previous prime is 422918443. The next prime is 422918519. The reversal of 422918497 is 794819224.

It can be written as a sum of positive squares in 4 ways, for example, as 40401 + 422878096 = 201^2 + 20564^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 422918497 - 2¹¹ = 422916449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422918407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242047 + ... + 243787.

It is an arithmetic number, because the mean of its divisors is an integer number (53112709).

Almost surely, 2^422918497 is an apocalyptic number.

It is an amenable number.

422918497 is a deficient number, since it is larger than the sum of its proper divisors (1983175).

422918497 is a wasteful number, since it uses less digits than its factorization.

422918497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739.

The product of its digits is 290304, while the sum is 46.

The square root of 422918497 is about 20564.9823000167. The cubic root of 422918497 is about 750.6178594524.

The spelling of 422918497 in words is "four hundred twenty-two million, nine hundred eighteen thousand, four hundred ninety-seven".