923139722 has 4 divisors (see below), whose sum is σ = 1384709586. Its totient is φ = 461569860.

The previous prime is 923139691. The next prime is 923139739. The reversal of 923139722 is 227931329.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 837002761 + 86136961 = 28931^2 + 9281^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230784929 + ... + 230784932.

Almost surely, 2^923139722 is an apocalyptic number.

923139722 is a deficient number, since it is larger than the sum of its proper divisors (461569864).

923139722 is a wasteful number, since it uses less digits than its factorization.

923139722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461569863.

The product of its digits is 40824, while the sum is 38.

The square root of 923139722 is about 30383.2144777342. The cubic root of 923139722 is about 973.6939680028.

The spelling of 923139722 in words is "nine hundred twenty-three million, one hundred thirty-nine thousand, seven hundred twenty-two".