422891738 has 8 divisors (see below), whose sum is σ = 637060788. Its totient is φ = 210538144.

The previous prime is 422891687. The next prime is 422891741. The reversal of 422891738 is 837198224.

It can be written as a sum of positive squares in 2 ways, for example, as 353552809 + 69338929 = 18803^2 + 8327^2 .

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

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, 453281 + ... + 454212.

Almost surely, 2^422891738 is an apocalyptic number.

422891738 is a deficient number, since it is larger than the sum of its proper divisors (214169050).

422891738 is a wasteful number, since it uses less digits than its factorization.

422891738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907728.

The product of its digits is 193536, while the sum is 44.

The square root of 422891738 is about 20564.3316934930. The cubic root of 422891738 is about 750.6020280278.

The spelling of 422891738 in words is "four hundred twenty-two million, eight hundred ninety-one thousand, seven hundred thirty-eight".