422409613 has 4 divisors (see below), whose sum is σ = 422459388. Its totient is φ = 422359840.

The previous prime is 422409587. The next prime is 422409619. The reversal of 422409613 is 316904224.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 68856804 + 353552809 = 8298^2 + 18803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422409613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422409619) 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, 8608 + ... + 30313.

It is an arithmetic number, because the mean of its divisors is an integer number (105614847).

Almost surely, 2^422409613 is an apocalyptic number.

It is an amenable number.

422409613 is a deficient number, since it is larger than the sum of its proper divisors (49775).

422409613 is a wasteful number, since it uses less digits than its factorization.

422409613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49774.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 422409613 is about 20552.6059904821. The cubic root of 422409613 is about 750.3166739750.

The spelling of 422409613 in words is "four hundred twenty-two million, four hundred nine thousand, six hundred thirteen".