402226613 has 4 divisors (see below), whose sum is σ = 425887020. Its totient is φ = 378566208.

The previous prime is 402226577. The next prime is 402226673. The reversal of 402226613 is 316622204.

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 352763524 + 49463089 = 18782^2 + 7033^2 .

It is a cyclic number.

It is not a de Polignac number, because 402226613 - 2¹⁴ = 402210229 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 (402226673) 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, 11830178 + ... + 11830211.

It is an arithmetic number, because the mean of its divisors is an integer number (106471755).

Almost surely, 2^402226613 is an apocalyptic number.

It is an amenable number.

402226613 is a deficient number, since it is larger than the sum of its proper divisors (23660407).

402226613 is a wasteful number, since it uses less digits than its factorization.

402226613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23660406.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 402226613 is about 20055.5880741503. The cubic root of 402226613 is about 738.1709228498.

Adding to 402226613 its reverse (316622204), we get a palindrome (718848817).

The spelling of 402226613 in words is "four hundred two million, two hundred twenty-six thousand, six hundred thirteen".