422406239 has 8 divisors (see below), whose sum is σ = 424337760. Its totient is φ = 420480000.

The previous prime is 422406203. The next prime is 422406263. The reversal of 422406239 is 932604224.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422406239 is a prime.

It is a super-2 number, since 2×422406239² = 356854061492250242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422406289) 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, 263039 + ... + 264639.

It is an arithmetic number, because the mean of its divisors is an integer number (53042220).

Almost surely, 2^422406239 is an apocalyptic number.

422406239 is a deficient number, since it is larger than the sum of its proper divisors (1931521).

422406239 is a wasteful number, since it uses less digits than its factorization.

422406239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2641.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 422406239 is about 20552.5239082698. The cubic root of 422406239 is about 750.3146762496.

The spelling of 422406239 in words is "four hundred twenty-two million, four hundred six thousand, two hundred thirty-nine".