402789422 has 8 divisors (see below), whose sum is σ = 690496176. Its totient is φ = 172624032.

The previous prime is 402789419. The next prime is 402789433. The reversal of 402789422 is 224987204.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14385323 + ... + 14385350.

It is an arithmetic number, because the mean of its divisors is an integer number (86312022).

Almost surely, 2^402789422 is an apocalyptic number.

402789422 is a deficient number, since it is larger than the sum of its proper divisors (287706754).

402789422 is a wasteful number, since it uses less digits than its factorization.

402789422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28770682.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 402789422 is about 20069.6143958971. The cubic root of 402789422 is about 738.5150535842.

The spelling of 402789422 in words is "four hundred two million, seven hundred eighty-nine thousand, four hundred twenty-two".